Fix error thrown on if an image isn't setup properly on the reports page.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1680 71f96598-fa45-0410-b640-bcd6f8691b32
 * Schema updater will now correct the settings for FOG_TFTP_PXE_CONFIG_DIR, FOG_TFTP_PXE_KERNEL, FOG_TFTP_PXE_KERNEL_DIR, FOG_PXE_BOOT_IMAGE, and FOG_MEMTEST_KERNEL.  So the end user will not need to manually update them.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1681 71f96598-fa45-0410-b640-bcd6f8691b32
 * forgot to change the system.php file

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1682 71f96598-fa45-0410-b640-bcd6f8691b32
* Cleaned up duplicate slash

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1683 71f96598-fa45-0410-b640-bcd6f8691b32
ADD README File.