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It used to be in CppTools, but since the hover handler only makes sense
in the context of the C++ editor, this is a better place.

Doesn't seem to make any difference in performance, but doesn't make
much sense either.

The mouse handling for code folding wasn't deactivated when the code
folding markers were hidden.

Reviewed-by: mae

RevBy: dt

RevBy:    con, hjk

Save settings instead of crashing. Sorry about that!

It is now possible to choose between case-sensitive or case-insensitive
completion. Also, you can now disable the automatic insertion of braces.

To match the class name, CppToolsPlugin.

location was removed from an editor

Task:     -
RevBy:    -
AutoTest: -
Details:  For now create only one build configuration "AllTargets",
build only the "all" target. Create runconfigurations for all targets
with option type=4

just put the actions into an action group

in ifdefed out sections

in the right editor from the start

Done based on new IQuickOpenFilter property, isHidden.

This change removes a number of wrong usages of the CppModelManager::documents()/document().

Task:     Reported on the ML multiple times.
Details:  Add a few methods to make it possible to save and restore
settings. Save those settings to the .ini file. (I'm not sure whether
seesion would be better, let's see what feedback we get.)