[Proposal] Simplify formatting

[ramezrafla]

UI's have changed a lot since this code was first written. For example, dropdowns now close when you click elsewhere on the screen (currently you have to click on [Cancel]). Also, the 'Save' step is no longer needed, people expect changes to reflect right away.

Also, I recommend we move formatting to the edit toolbar. There are cool ways (see Google Sheets and Office365 Excel, not to mention SpreadJS) to do this now. We'll work on this and update.

[eddyparkinson]

+1 on the UI improvements.

Also, the 'Save' step is no longer needed, people expect changes to reflect right away

exists in ethercalc