Merge branch 'master' into feature/stabilization
PLF-5974: Cannot start PLF with MySQL in UTF-8 (Wiki)

Fix description:
- Add dialect to repository configuration
WIKI-655 fix the url of wiki page
WIKI-926 remove the restrict rest for getImage method
Merge branch 'feature/stabilization'
SWF-2923 : Create pkg-improv branch and update projects versions

Signed-off-by: Arnaud Héritier <aheritier@exoplatform.com>