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Merge pull request #340 from flowplayer/dev

5.4
Fix error when replaying item without playlist
fix for flash mode viral embedding (#261)
Also check for safari on mobile native_fullscreen, fixes #348
Merge pull request #347 from flowplayer/bug/261-flash

fix for flash mode viral embedding (#261)
Merge pull request #351 from flowplayer/bug/348

Also check for safari on mobile native_fullscreen, fixes #348
Always remove sources and set src of video tag in first-frame setups

Internet Explorer (9) always prefers source tags before src-attribute
it also prevents touching the sources tags while playing the video so
the sources have to be removed before playback to get playlist item
switching working.

Fixes #345
Clear rewind to first clip when playlist item explicitely chosen

Fixes #342
Merge pull request #355 from flowplayer/bug/342

Clear rewind to first clip when playlist item explicitely chosen