Bold and Italic commands skip formatting. Added Italic command

Applying the formatting if there is an space in Chrome prevents a command from being executed. Italic and bold commands now enforce the formatters to be skipped so that the NBSP is not replaced until after the command has been executed. This solves the bug shown in the nice gif...

![scribe_formatting_bug](https://cloud.githubusercontent.com/assets/5630563/4443745/bca411a2-47ea-11e4-9a91-6778185f403d.gif)