closes#812
- replace defaults with consistently named .png files
- change the settings saving code so that it doesn't double-save images and save the defaults to the db
* Bio field now counts down.
* Bio filed count now turns red when < 20
* Cover image now has gradient
* Change button now has square corners
* Removed "forgot password" link
* Change password button is now red
* Change password button is now aligned with the form
* Hover state on the profile picture now reads "Edit Picture"
