Code review comment for lp:~nagos/openshot/nagos

New feature to remove empty spaces in project. Space removed from all tracks without destroying transitions and relative position of clips.
Now it in project menu.

Plus proper clips compare thru __cmp__ without compare_clip. All sort/min/max work simply like sort([clip1,clip2])

Snap of razor. If you click in 10 pixels away from playhead, clip will be divided in playhead position. Snap button enable/disable this feature.

BUG:518504 Tabs in preferences can't be switched in localised version.

Enable/disable audio/video buttons now can be clicked only with arrow cursor. Without it clit divided in two with disabled audio.

Minor localisation strings.