Add better checking to the checkIfExist.  Inform user if they try to deploy a host without an image assigned, that they need to assign one.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1616 71f96598-fa45-0410-b640-bcd6f8691b32
Fix error on 1026 of GroupManagementPage.class.php

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1617 71f96598-fa45-0410-b640-bcd6f8691b32
ADD README File.