Editor toolbar layout with dropdowns is unattractive

[peller]

not sure if this is 'just a CSS thing'

see dijit/tests/test_Editor.html look for "Optional toolbar buttons" where dropdowns are currently disabled.

1. The dropdowns float to the top and are not vertically aligned with the other buttons which are lower. Perhaps instead of sharing a baseline with their labels, it would be nice if it were all vertically centered?
2. I noticed that the background does not reach the bottom of the toolbar. Presumably it's got something to do with the dropdowns throwing off the toolbar height?

[nonken]

(In [12788]) Added inline classes to label of text plugin and added theme css changes. Also changed height of bg image for tundra, fixes #5814