Long live KDevelop 4.7.0
Now the application is in charge of displaying the welcome page

The welcome page is displayed by summoning the KDevWelcomePage plugin.
The parent CMakeLists.txt file is the one in the parent subdirectory

We're not dealing with imports for now.
Fix porting error

Transform 'instantiatedTypes[id].isNull()' into '!instantiatedTypes[id]'
Improve includes detection

Improve unit test
Use QRegExp captured texts rather than weird string arithmetics
Support -isystem argument
Merge remote-tracking branch 'origin/4.7'

Conflicts:
	CMakeLists.txt
Merge remote-tracking branch 'origin/master' into frameworks
Remove dead code
Merge remote-tracking branch 'origin/master' into frameworks