Small tweaks:

Small tweaks:
Move include of display messages in file_prefs to the top of the file,
because it wasn't included everywhere correctly ('../functions') or in
some places not at all, better move it to the top so the functions are
available at all times in a consistent manner.
Also throw an error if the tmp pref file could not be copied.
Remove initializing of colors that aren't used in logout_error.

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@4637 7612ce4b-ef26-0410-bec9-ea0150e637f0