Use folder icon when not defaut icon
Add check if parent group has custom icon.

Refs #174
Add option in settings for using group icons for newly created entries.

Closes #174
Rename Group::includeInSearch() to resolveSearchingEnabled().

Make it public and drop the resolveInherit parameter.
Add Group::resolveAutoTypeEnabled().
Show the inherited value in EditGroupWidget.
Increase default number of transform rounds to 100000.

Even low-end smartphone should be able to handle that.
Merge remote-tracking branch: upstream/master