Add a license statement in the footer (#637)

* Add a license param in the config used in footer

Also adds initial EN and NL i18n statements referring to the license.

* Add Michiel to CONTRIBUTOR

* Add example text for i18n of `licensed_under`

* Add safeHTML filter to license value in the footer

Also updates the example config in the exampleSite config.toml to link
to Creative Commons.

* Fix separator dot in footer within License ifdef

i18n/ar.toml

@@ -29,6 +29,9 @@ other = "هذه الصفحة غير موجودة"
 [head_back]
 other = "بإمكانك العودة إلى <a href=\"{{ . }}\">homepage</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "بواسطة"
 

i18n/bn.toml

@@ -30,6 +30,9 @@ other = "দুঃখিত, কাঙ্ক্ষিত পাতাটির
 [head_back]
 other = "আপনি <a href=\"{{ . }}\">নীড়পাতায়</a> ফিরে যেতে পারেন"
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "চালনায়"
 

i18n/cs.toml

@@ -29,6 +29,9 @@ other = "Omlouváme se, stránka nebyla nalezena."
 [head_back]
 other = "Můžete se vrátit na <a href=\"{{ . }}\">homepage</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Stránka používá"
 

i18n/de.toml

@@ -30,6 +30,9 @@ other = "Tut mir Leid, die Seite existiert leider nicht."
 [head_back]
 other = "Du kannst hier zurück zur <a href=\"{{ . }}\">Startseite</a>."
 
+[licensed_under]
+other = "Lizenziert unter"
+
 [powered_by]
 other = "Gestaltet mit"
 

i18n/en.toml

@@ -30,6 +30,9 @@ other = "Sorry, this page does not exist."
 [head_back]
 other = "You can head back to the <a href=\"{{ . }}\">homepage</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Powered by"
 

i18n/es.toml

@@ -30,6 +30,9 @@ other = "Disculpa, la página no existe."
 [head_back]
 other = "Puedes regresar a la <a href=\"{{ . }}\">página inicial</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Desarrollado por"
 

i18n/fi.toml

@@ -30,6 +30,9 @@ other = "Valitettavasti tätä sivua ei ole olemassa."
 [head_back]
 other = "Voit palata takaisin <a href=\"{{ . }}\">kotisivulle</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Tarjoaa"
 

i18n/fr.toml

@@ -30,6 +30,9 @@ other = "Désolé, cette page n'existe pas."
 [head_back]
 other = "Vous pouvez revenir à <a href=\"{{ . }}\">l'accueil</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Propulsé par"
 

i18n/he.toml

@@ -30,6 +30,9 @@ other = "מצטערים, דף אינטרנט זה אינו קיים"
 [head_back]
 other = " אתה יכול לחזור<a href=\"{{ . }}\">לדף הבית</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "מופעל על ידי"
 

i18n/hi.toml

@@ -30,6 +30,9 @@ other = "क्षमा करें, यह पृष्ठ मौजूद
 [head_back]
 other = "आप वापस आ सकते हैं <a href=\"{{ . }}\">मुखपृष्ठ</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "द्वारा संचालित"
 

i18n/hu.toml

@@ -30,6 +30,9 @@ other = "Sajnálom, a kért oldal nem létezik."
 [head_back]
 other = "Itt visszaléphet a <a href=\"{{ . }}\">Főoldalra</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Motor:"
 

i18n/id.toml

@@ -30,6 +30,9 @@ other = "Maaf, halaman ini tidak ada."
 [head_back]
 other = "Anda dapat kembali ke <a href=\"{{ . }}\">beranda</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Dipersembahkan oleh"
 

i18n/it.toml

@@ -30,6 +30,9 @@ other = "Siamo spiacenti, questa pagina non esiste."
 [head_back]
 other = "Torna alla <a href=\"{{ . }}\">homepage</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Generato da"
 

i18n/ja.toml

@@ -30,6 +30,9 @@ other = "申し訳ございません。アクセスしようとしたページ
 [head_back]
 other = "<a href=\"{{ . }}\">トップページ</a>からお探しいただきますようお願い申し上げます。"
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "利用技術"
 

i18n/ko.toml

@@ -30,6 +30,9 @@ other = "해당 페이지가 존재하지 않습니다."
 [head_back]
 other = "<a href=\"{{ . }}\">홈페이지</a>로 돌아가기"
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Powered by"
 

i18n/ms.toml

@@ -33,6 +33,9 @@ other = "Maaf, halaman ini tidak wujud."
 [head_back]
 other = "Kembali ke <a href=\"{{ . }}\">halaman utama</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Dikuasakan oleh"
 

i18n/nl.toml

@@ -30,6 +30,9 @@ other = "Sorry, deze pagina bestaat niet."
 [head_back]
 other = "U kunt terugkeren naar de <a href=\"{{ . }}\">thuispagina</a>."
 
+[licensed_under]
+other = "Valt onder"
+
 [powered_by]
 other = "Aangedreven door"
 

i18n/np.toml

@@ -30,6 +30,9 @@ other = "माफ गर्नुहोस, यो पृष्ठ उपलब
 [head_back]
 other = "मुख्यपृष्ठमा फर्किन सक्नुहुन्छ।<a href=\"{{ . }}\">मुख्यपृष्ठ</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "द्वारा संचालित"
 

i18n/pl.toml

@@ -30,6 +30,9 @@ other = "Wybacz, ta strona nie istnieje."
 [head_back]
 other = "Możesz wrócić na <a href=\"{{ . }}\">stronę domową</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Napędzane przez"
 

i18n/pt-br.toml

@@ -30,6 +30,9 @@ other = "Desculpe, essa página não existe."
 [head_back]
 other = "Você pode voltar para a <a href=\"{{ . }}\">página inicial</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Promovido por"
 

i18n/ro.toml

@@ -30,6 +30,9 @@ other = "Ne pare rău, această pagină nu există."
 [head_back]
 other = "Poți să te întorci la <a href=\"{{ . }}\">pagina principală</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Susținut de"
 

i18n/ru.toml

@@ -31,6 +31,9 @@ other = "Извините, но этой страницы не существу
 [head_back]
 other = "Можете вернуться обратно на <a href=\"{{ . }}\">домашнюю страницу</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Работает на"
 

i18n/se.toml

@@ -30,6 +30,9 @@ other = "Ursäkta, men denna sida existerar inte."
 [head_back]
 other = "Här kan du komma tillbaka till <a href=\"{{ . }}\">startsidan</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Byggd med"
 

i18n/sk.toml

@@ -32,6 +32,9 @@ other = "Prepáčte, ale táto stránka neexistuje."
 [head_back]
 other = "Späť na <a href=\"{{ . }}\">domácu stránku</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [see_also]
 other = "Pozrite tiež"
 

i18n/sq.toml

@@ -30,6 +30,9 @@ other = "Na vjen keq, faqja nuk u gjet"
 [head_back]
 other = "Mund të ktheheni prapë tek <a href=\"{{ . }}\">homepage</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Mundësuar nga "
 

i18n/tr.toml

@@ -30,6 +30,9 @@ other = "Özür dileriz, böyle bir sayfa yok."
 [head_back]
 other = "<a href=\"{{ . }}\">Ana sayfaya</a> dönebilirsiniz."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "Site program altyapısı"
 

i18n/zh-cn.toml

@@ -30,6 +30,9 @@ other = "此页面不存在"
 [head_back]
 other = "返回 <a href=\"{{ . }}\">首页</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "技术支持"
 

i18n/zh-tw.toml

@@ -30,6 +30,9 @@ other = "此頁面不存在"
 [head_back]
 other = "返回 <a href=\"{{ . }}\">首頁</a>."
 
+[licensed_under]
+other = "Licensed under"
+
 [powered_by]
 other = "技術支援"