Fix VideoTest following removal of PhVideoEngin::frameIn and frameLength
Uncrustify
(TimeCodeSpec) Fix 23.976 average framerate

Maybe the name PhTImeCodeType2398 should be changed too
Remove use of PhFrame in PhTimeCodeEdit

This is in preparation for the removal of stringFromFrame, which
is unreliable for non-integer fps.
(GraphicStripTest) Remove use of stringFromFrame
Fix AVTest and remove one use of PhTimeCodeDialog::frame
Remove PhTimeCodeDialog::frame
Use PhTimeCodeDialog::time() instead of frame() in spec
Use PhTimeCodeDialog::time() instead of frame() in tests
Remove PhTimeCodeEdit::frame() now that it is unused

This removes the last user of PhTimeCode::frameFromString !