This solves issue #56. Apparently, a previous commit changed sceneElementActor and broke the setRenderer method, making that it always restored the initial renderer.
I've also added a test so this will not happen again :)

Note: I've implemented a "reflection-based" implementation of the equals method that may be interesting for other tests...
Adding support for frame-based animations. This is basically a frame renderer defined as follows:
- List of frames
     + A frame (TimedRenderer) is a wrapper for any other renderer. It also includes the duration
- Function to determine the sequence of frames
     + Two types are currently supported: linear (with loop/no loop variants) and random. Linear is default, if not specified.
The whole ChangeRendererActionTest has been reworked!
- Now, it relies on Apache's EqualsBuilder to determine equality among renderers (common-lang has been daded to engine's pom so we can use it in the future)
- It does not use json anymore for testing
These images are not needed
Solving issues identified on revision
Basic save support
Merge pull request #58 from jtorrente/issue56-changerenderer

This solves issue #56. Apparently, a previous commit changed sceneElemen...
Merge branch 'master' of https://github.com/e-ucm/ead into renderer-frameanimation
Fix vars context test
Adding test for Frame Animation
Added scenes managment (add/remove scene action/command and scenes list view)
Added add scene element command/action
Merged Assets and Factory and one only class (Assets)
Adding test for Frame Animation
Null issues solved.
Merge pull request #59 from jtorrente/renderer-frameanimation

Adding support for frame-based animations. This is basically a frame ren...
Some refactor in assets
Merge branch 'master' into editor
Better editor model (WIP)