[Feature request] Move event description below calendar

[MMachado05]

Currently, the event description is the first item visible when opening an availability chart. If I use the area to take notes on what I intend to do during the meeting, this means there's a significant amount of space between my availability settings, and the "save" button at the top right. Here's a screenshot of what I mean:

Because Schej is largely used for finding meeting times, and event descriptions are largely second to this, I think it would be appropriate to move the description field to be last on the page; that way, all the availability-setting functionality is grouped together, and you don't need to scroll to an unseen part of the screen to save your availability once you're done setting it!

[maxwellward]

This appears to be implemented by #168 which is awaiting review