Adding links to vraptor plugins
Manually merge of #840 and #841
Merge pull request #854 from garcia-jj/ot-docsmergingfrom840and841

Fixing texts from pull requests #840 and #841
Relax gsonBuilder visibility allowing for custom config
Uses protected getter for GsonBuilder to allow for extension
Adding docs to interceptor annotations
Adding more docs about interceptor annotations
Merge pull request #856 from adolfoweloy/protected-gsonbuilder

Relax gsonBuilder visibility allowing for custom config
Adding example of use about PackagesAcceptor
Clarifying text about accept restriction
Adding info about stack.next
Rolling back info about next call
Adding info about next call
injecting EMF instead creating manually
removing extra setLocale
removing missed i closed tag
fixing i18n on header and login pages
removing more hardcoded messages
fixing language menu
Merge pull request #857 from garcia-jj/ot-interceptordocs

[docs] Adding docs to interceptor annotations