- Update version to 2.7.7
* Add displayNumber to fixed that ffmpe will crash if multi-user
with x11grab display argument :0.0
* update run depend
* use DISPLAY directly
* desktop: add generic name.

- Update version to 2.7.3
* Fix tooltip not above on screen-recorder window
* Support flv format recording
* Synchronous translations from transifex.com
* Support deepin-manual newest version
* Fix error that GIF's content is not complete
* Fix GIF file break when stop recording less than 2 seconds
* Fix zero byte mp4 problem
* Use -vf scale fix "division by 2" error, and now we can use yuv420p pix_fmt
to make mp4 play on mobile phone
* Add mkv_framerate and mp4_framerate customize options
* Don't need append char to gif end since gif exit process is correct now,
otherwise gif file will break if you stop recording too fast. ;)
* Synchronous translations.