Nifty-Editor v0.6-beta

The result of summer of code! . Feature added:

• Copy&Paste support
• Do/undo functions
• Add custom style files
• Add custom controls files
• Read UseStyles and UseControls tag
• bug fixes

For further details see the commits.

nifty-editor0.5.9: And with this nifty-editor 0.5.9 is almost completed ! There's only s…

…ome testing left and a more properties for the new elements . So this closes #7 and also gives some fixes to jFilechooser implementation