Fix correct spelling
Fix template : add Bootstrap "btn" class
Fix bug on public group

* publics group where always read from cassandra as private groups
  because the publicGroup column was never read (but correclty written)
Merge pull request #344 from PierreRust/fixPublicGroup

Fix bug on public group
Corrected #337
Error in the default profile
Corrected D3/WRO4J/welcome message errors
Corrected code (return values, style...)
Remove thumbnail issue #346
Merge pull request #348 from hellsingblack/master

Remove thumbnail issue #346
Corrected #339
Corrected tests
simplified code
Documentation
Documentation
LDAP management refactoring
Removed unused variables
IDEA automatic code reformatting
When the account is managed by LDAP, you cannot reinitialize your password
Fix 403 error on prefrences form submit