Move action nubs

What this does:
- moves action nubs in the mailbox to below the icon
- moves the actions drop down tool tip to open to the left of the nub
- reduces spacing in mailbox a bit more

What needs to (maybe) be done:
- fix the little arrow on the action tooltips, it isn't lining up anymore

![screenshot_2013-07-06_10_23_pm](https://f.cloud.github.com/assets/441/757494/4ea601ec-e6ac-11e2-99da-eb3d9bbf86fd.png)

@redronin what do you think?