Bug: Toolbar Actions Don't Work Expectedly When No Selection

[EvanZhouDev]

Summary

When you use the toolbar to perform an action with nothing selected, the default should not be to select whatever has changed, but rather to put the cursor into a position which can edit that change.

For example, when I click Bold on the toolbar, it should automatically put double asterisks around my current cursor position. Rather, it creates 4 asterisks and selects all of them.

[EvanZhouDev]

@davidmyersdev Please take a look at this... I would appreciate any nudge in the right direction to fix it myself. I need this for a project I am working on.