Replace error messages for HttpJsonHelper.
added javadoc, used forbidden exception instead of conflict exception in needed places
Merge branch 'master' of github.com:codenvy/platform-api
IDEX-1006 create service for receiving icons by project type
Merge remote-tracking branch 'origin/master'
fixed test
CLDIDE-1956 Allow to enable or disable OrgAddon from configuration
IDEX-1006 remove service
Merge remote-tracking branch 'origin/master'
switch to latest version of everrest
Merge branch 'master' of https://github.com/codenvy/platform-api
api docs generation with swagger
Merge branch 'master' into CLDIDE-1841