qmljs: adding qrc support

Qmljs now keeps a cache of parsed qrc files, and can resolve "qrc:" links.

This breaks the assumption that the name that the qml files has on
the filesystem is the one that qml sees, and that contents of
directories can be found just looking at file whose path starts with the
directory path.

Currently the first file is used when multiple qrc files contain the same
path, but support for strict and weak path resolving is already there.

At the moment only qrc files for projects that call updateQmljsCodeModel
are updated.

ChangeLog: QmljsSupport: Imports using qrc links are resolved.

Task-number: QTCREATORBUG-8953
Change-Id: I695fac2692af2417d49c192c580a1c2e7b4873f4
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Git: Prevent or close fixup editor if no local commits are found

Change-Id: I546241fb3531cbc542b97d6d0f53382c9225dcf4
Reviewed-by: Petar Perisin <petar.perisin@gmail.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Git: Move submit highlighter to a separate file

Change-Id: I61e07b2abe3b1da1b56935bb3ce528a5f571705f
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Git: Provide a real highlighter for interactive rebase

* Kate highlighter doesn't have enough colors
* It works out of the box only on Windows
* New editor support links

Change-Id: I09bbaef08574660e535ccb86c2c460d5976fc2e3
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
VCS: Fix context menu for custom editors

Change-Id: I44718dce73bbcd376d90fdf40f4bb5ab4c57443a
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Git: Better wording for rebase in progress message

Change-Id: I13d002773dd81206c70b7eb91727f152d7e84507
Reviewed-by: Petar Perisin <petar.perisin@gmail.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>