Updated password scheme to version 3. Also fixed a string typo.
Several misc changes.
- CSS: Made font sizing more consistent. Made form field labels bold.
- Edited text on various pages. Added an update message regarding the
  host switch.
- Added the ability to easily make the site enter read-only mode.
Disabled PHP compression option. Server settings make this unnecessary.
Removed documentations notes regarding host, as it has changed.