Merging Codebase

Merges my codebase with the library and makes all themes uniform in
size and layout. Moves the theme controller to directly below the login
panel on mobile.
Updates to Original Theme

Changes the opacity of the background for login-panel, input-groups,
and sign in button.
Changes to Theme Selector on Original Theme

Changes the color scheme for the theme selector when viewing on mobile
to offer a better visibility of each button