ValidateIPAddress.ps1, WiMax reset bugfix, clear checkboxes bugfix

-Fixed a bug in ResetWiMaxProfiles.au3 where the Options menu did not
open on first run on a machine, causing the rest of the script to fail.
-Added ValidateIPv4 address. Script checks assigned IP address and
reports back on: no IP address, valid IP address, 10.x.x.x address
(machine needs to be registered).
-Fixed behavior for Clear All Checkboxes button in application where
button would not disable while fixes were running, allowing some odd
behavior if the button was clicked midway through fixes.