[kdenlive] Kdenlive: some UI changes

[Jean-Baptiste Mardelle]

Hi all,

In preparation for the 16.08 release, I am trying to introduce some of the 
redesign ideas we discussed with Vincent last year in Randa.

One of these idea was to move the tools and options that are currently in 
the status bar in a new toolbar placed just above the timeline.

I have started implementing it in git master, and you can see a picture of 
current status in the phabricator task:

https://phabricator.kde.org/T809

Comments and ideas on this are welcome.

regards,

Jean-Baptiste Mardelle