media_profiles.xml: Update VideoEditor(MovieStudio) capability

--update encoding levels for H264 and MPEG4 for VideoEditor.

--de-grade the video import capability from 1080P to 720P
  When preview-playing the clips in VE, VE will create new decoding
  instance for next clip before finishing the current decoding instance,
  thus when two 1080P or 1080P+720P decoding instances
  co-exist simultaneously, video hardware is overloaded.

CRs-Fixed: 533250, 581582
Change-Id: I68f9dd76f57615c54226858aa11c5220c1962d39

Conflicts:
	configs/media_profiles.xml

Conflicts:
	configs/media_profiles.xml