Plone 4.3 compatibility + simplelayout.types.common removed

@jone 

- Since simplelayout.types.common is deprecated and it's not needed to make sure this package works, I removed it. 

- I also removed the custom flowplayer view, wich redirects to the parent (Does no make any sense).

- Test setup for plone 4.3.x 

- Add missing upgrade step from release 1.0.1.
:scissors: ?