This commit contains several syntax fix.

This commit contains several syntax fix.

- Pontus: Don't use tabs 8-)
- Jason, please pay atention at the changes. Mostly
  internationalization stuff and " to ' changes. Also
  leave E_ALL only in PHP.INI into the reporting error options.
  That way you'll get on screen all the compilation warnings
  in order to remove them.

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@2405 7612ce4b-ef26-0410-bec9-ea0150e637f0