Bug fixes
[1ec3337] Renamed TextAreaField to TextareaField (@javiereguiluz)
[5081a91] Misc. doc fixes and improvements (@javiereguiluz)
[c093778] Added support for icons in menu sections (@javiereguiluz)
[1832998] Fixed the cloning of FieldDto objects (@javiereguiluz)
[c75dbed] Added the missing template for LocaleField (@javiereguiluz)
[13956d6] Fixed some translation keys (@javiereguiluz)