Removed superfluous includes (closes #3499)
Delete complete div onclick even if error message (closes #2561)
Change error message for local missing (closes #2450)
Merge pull request #607 from eguaj/3.2-A3499

Removed superfluous includes (closes #3499)
Merge pull request #610 from thingthing/3.2-I2561

Delete complete div onclick even if error message (closes #2561)
Merge pull request #611 from thingthing/3.2-I2450

Change error message for local missing (closes #2450)
Change log class (closes #3182)
 + Add Trace level for developper
 + Change string level by const
 + Change init log level from WEIF to WEF
 + Add comment on const
 + Delete old line of code which doesn't serve anymore