* Smoother animations
* Removed blurring in Chrome temporarily
* Centering is now done in CSS (the height is calculated in JS to work in FF and Opera)
* Modals now need close: true to be set to enable the close icon and shortcuts for closing (ESC key, background clicking)
closes#452
- changed keyboard shortcut to insert ![].. not !image[]
- changed regex in ghostdown to only work for ![]
- added a further regex in ghostdown to properly match for URLs inside the parens