allow use of _join_relation with "many many"

there are two tables on which the "_join" method must be called.
using personal class on title should be authorized
Merge pull request #20 from vrcAlbert/feature/layout-standard

Layout standard : using personal class on title should be authorized
Merge pull request #19 from vrcAlbert/master/0.2

Query : allow use of _join_relation with "many many"
small fix on appdesk
Merge branch 'master/0.2' of github.com:novius-os/core into master/0.2
Controller front : duplicate inline js authorized betwen header and footer
Merge branch 'master/0.2' of git://github.com/novius-os/core into master/0.2
Application::symlink : if native symlink don't work,  use several method
Fix some css in blank slate front
Bugfix : regression wijsuperpanel, no scroll in ostabs because scrollbar hidden
Add stacktrace.js in vendor
Issue 19 : Crud, enter in a field close the tab
Media edit : force reload thumbnail
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Merge
Sharing - Copy - Var item
Bugfix : Mediacenter appdesk, view flick trought don't hide inscpertors
Merge branch 'master/0.2' of git://github.com/novius-os/core into master/0.2
Refactofing controller front rebuild cache