Classes divided in 2: BrowserInternalElement and BrowserInternalElementForClasses.
Tests added.
Revert selector.
Comments added.
tempCat renamed into tempClass
One more test.
1st element must be BrowserInternalElementForClasses.
Add only one class.
Case for Operators.
Revert about operators, it's not necessary.
Use saved BrowserInternalElementForClasses instance. And more comments.
Check classes for null.
Remove everything about icons from BrowserInternalElementForClasses.
Merge remote-tracking branch 'remotes/origin/Sitrus2' into DUI-ViewModelChange(for_NestedClasses)
_items renamed into classesItems.
_name renamed into name
BIEFC moved into AddCategory method.
Comment about operators.
ContainsClass added.
Merge branch 'Sitrus2' into DUI-ViewModelChange(for_NestedClasses)