Basic clip interaction

[voylin]

At this moment when dragging clips onto the timeline, they become static objects. For this issue to be resolved we need following features:

• [x] Moving clips;
• [x] Resizing clips;
• [x] Deleting clips;
• [ ] Cutting clips

[voylin]

I'll start working on this tomorrow when I find the time. After this is complete a next alpha will be released.

[voylin]

I got caught up in the rendering stuff. Will be focusing on this the next couple of days so the next alpha can finally come out.

[voylin]

Next 2 items will be handled in the next couple of days.