Add Placeholder Images for Missing Icons

Eventually these will be replaced with actual images of the items, but
this is a temporary fix to prevent massive error logging on webserver
for missing files.
Modified Search Result Table Layout

+Added column for showing map player is on
+Fixed GPS coords displaying incorrectly
+Catch "null" item names and point to nullitem.png thumbnail
Convert mysql_ functions to PDO Methods

+Convert more deprecated mysql_ functions to PDO methods.
Fixed Error in Player Info Page

+Player info pages were broken from some previous changes.  This is now
fixed.
Minor CSS Change & Added Items

+Minor change to CSS class (need to go through and do a major cleanup on
the CSS/HTML in all pages)
+Added some more items to the known items list
Fixed Error in Player Positions

Fixed a logic error in SQL query