In CppTools, keep cpp file settings in plugin and settings page
via shared pointer and apply to mime DB in
extensionsInitialized() (after CppEditor has loaded
and registered the mime types).

Task-number: 252299

Hopefully i didn't miss a plugin.

In case the completion shortcut contained the escape key (Mac xcode-like
shortcut settings).

Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

isValid -> supportsEditor

Was always on the first screen since the screen number was determined
incorrectly. Thanks to Christian Hönig for reporting the issue.

Reviewed-by: Daniel Molkentin

the quickopenfilter

Reviewed-by: Roberto Raggi

This is for the case of function overloads where one overload takes no
parameters. Solved by keeping track of the duplicate count.

Done with Roberto Raggi.

Done with Roberto Raggi.

Done with Roberto Raggi.

Done with Roberto Raggi.

Done with Roberto Raggi.

For example, don't keep triggering scope completion on bunch of colons.

Done with Roberto Raggi.

Done with Roberto Raggi.

Fixes: Introduce a cpp settingspage containing file naming conventions (lower case and suffixes). Reorder VCS settings pages.

Task: 241959, 248085

RevBy: Optics/Naming checked by con
Details: Give IOptionPage an id() to differentiate from trName(). Make showOptionsDialog return a bool (applied) and give it an optional parent. Change Cpp and form class wizards, give them a Configure... button to change those settings.

For example when a file was called test.something.cpp, it would search
for test.h instead of test.something.h.

Task:     -
RevBy:    Thorbjorn
AutoTest: -