ruler: Seeks need to be on idle to compress the seeks while scrubbing
utils/pipeline: Save the position of the last compressed seek

This ensures we actually seek to the correct position, the one requested last.
Put multiple new clips in sequence on the same layer

Earlier the code would put all clips on top of each other and give each
clip its own layer. This is unexpected and not very helpful.
Updated Hungarian translation
Updated Lithuanian translation
Merge branch 'master' of git://git.gnome.org/pitivi
Drag corrected