Add SunTrust and Scottrade.

Add appropriate YAML entries and icon images.
Add newline at end of _data/finance.yml.

Not exactly necessary, but the inconsistency with previous changes
was bothering me.
Update Scottrade icon to 32x32.

Took a bit of searching, but finally found a higher-res version.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	_data/finance.yml
Merge remote-tracking branch 'upstream/master'

Conflicts:
	_data/finance.yml
Merge branch 'master' of github.com:coreymatyas/twofactorauth
Merge pull request #154 from coreymatyas/master

Add SunTrust and Scottrade to Finance category.