Prevent erroneously adding transition when moving clip.
link with X11 explicitly

Because ColorPickerWidget uses the X11 API directly and the linker doesn't add "needed"
libraries automatically on Linux distros, we need to link with the X11 library explicitly.

see eg. http://fedoraproject.org/wiki/Features/ChangeInImplicitDSOLinking
Fix removing (ripple delete) a transition.
Add Catalan translation.
Update Czech and Portugese translations.
Let F5 function key reload the timeline UI.
Convert "Color Grading" filters to QML.

Use lift_gamma_gain filter instead of frei0r.coloradj for non-GPU processing to match movit.lift_gamma_gain functionality.
Fix inclusion of qml/filters/color/meta_movit.qml.
Fix size of color wheels.
Add QML UI for legacy frei0r.coloradj_RGB filter.

This filter is hidden from the add filter menu but made available for
filters that have already been included in projects.
Clear filter UI when selecting new shot on timeline.
Hide the FFV1 preset because it does not work.
Fix Overlay HTML appearing as Circular Frame in filter list.
Update Catalan translation.
Fix loading legacy frei0r.coloradj_RGB after latest change.

And prevent Overlay HTML from appearing if not available.
Conver glow filters to QML