Added PHP/ Remade Signup form/ reduced clutter

Made all the signup errors use only one XML file instead of one for each
error
Deleted previous remote database file due to it no longer being relevant
Removed the entire security question part of the signup process and
added it onto the original signup form
Added PHP files for database connectivity
Completed all Login feature remote connectivity

Revised a few of the UIs and how they were displayed via XML
Deleted some unused XML files
Added last few PHP files for Login feature