Bump version to v0.9.2
Update README.md for v0.9.2
Bump version also for wix installer
Use QCommandLineParser to handle the command line arguments

This gives us a nice --help and --version option for free.
Support recent files in jump list on Windows

Use QtWinExtras add-on to support the recent files category in the task
bar jump list on Windows.
Replace options button in FindReplaceWidget with QAction in QLineEdit

Use the new Qt 5.2 functionality to add QAction to QLineEdit for
showing the find options menu.

Remove the previous used toolbutton.
Add Qt5WinExtras.dll to WiX installer file
Merge branch 'feature/upgrade-qt5.2' into develop

Conflicts:
	app/mainwindow.cpp
Merge branch 'release/v0.9.2' into develop
Merge branch 'develop' into coverity_scan