Implement user's status message.
-Save status message in settings.
-Load status message upon application start
-Display status message in UI and make it editable, similar to username
ElideLabel is now a clickable label.

To edit the status message, click on the label instead of clicking on a separate button.
Change statusMessageLabel's style
Remove old code
Clean up code
Add comments
Clean up Status Message UI

Make font bigger for status message.
Status message editor font is full size to make editing easier.
Fix mistakes per discussion about Pull Request #79.
Remove username edit button, replace with clicking on the username label
Change the mouse cursor when mousing over the clickable labels
Change names of functions in OurUserItemWidget to more accurately
reflect their puposes.
Make ElideLabelEditable class

ElideLabelEditable class is an ElideLabel that can register click events
and change the mouse cursor to show the user that it is editable.
Resolved merge conflict