Updated the language files to fix issue #U4-3979 and also corrected invalid URL's across all the language files.
Fixed ticket U4-4840 invalid Italian words in the Italian language file.
- Added all the missing Key's to the Spanish file
- Updated the help documentation URL's
- Updated the Community Contributor URL's
Merge pull request #546 from readingdancer/UmbUkFest-U4-3979

Updated the language files to fix issue #U4-3979
Re Fixes: U4-5220 XSLT Extensions in App_Code or /bin not working in 7.1.4 - this is just a work-around fix, the real problem is the dll's in the user's bin folder.
Merge branch '7.1.9' into 7.2.0

Conflicts:
	src/Umbraco.Web.UI/umbraco/config/lang/da.xml
	src/Umbraco.Web.UI/umbraco/config/lang/de.xml
	src/Umbraco.Web.UI/umbraco/config/lang/en.xml
	src/Umbraco.Web.UI/umbraco/config/lang/en_us.xml
	src/Umbraco.Web.UI/umbraco/config/lang/es.xml
	src/Umbraco.Web.UI/umbraco/config/lang/fr.xml
	src/Umbraco.Web.UI/umbraco/config/lang/he.xml
	src/Umbraco.Web.UI/umbraco/config/lang/it.xml
	src/Umbraco.Web.UI/umbraco/config/lang/ja.xml
	src/Umbraco.Web.UI/umbraco/config/lang/ko.xml
	src/Umbraco.Web.UI/umbraco/config/lang/nl.xml
	src/Umbraco.Web.UI/umbraco/config/lang/no.xml
	src/Umbraco.Web.UI/umbraco/config/lang/pl.xml
	src/Umbraco.Web.UI/umbraco/config/lang/pt.xml
	src/Umbraco.Web.UI/umbraco/config/lang/ru.xml
	src/Umbraco.Web.UI/umbraco/config/lang/sv.xml
	src/Umbraco.Web.UI/umbraco/config/lang/zh.xml
	src/Umbraco.Web.UI/umbraco/create/nodeType.ascx
	src/Umbraco.Web/umbraco.presentation/umbraco/create/nodeType.ascx.cs
fix merge