Update password change templates

Changed buttons to bootstrap-style to fit the theme, added buttons on
profile sidebar for email settings, social accounts, and password
change.  Password reset button added to login page.
Delete unchanged templates

Also updated some buttons that were overlooked before.
Update template name to match allauth
Fix POST data for email verification page

Turns out allauth is very picky about the posted data. I think they
fixed it for the next release, though.
Change form style and profile buttons

Add crispy template tags to email page, password change/set, and
signup. Also add active classes to profile sidebar.
Merge branch 'feature/allauth-pages' into develop

Resolves #39 and resolves #42