Fix network device description/machinenotes display and edit

- Fix ADO cursor issue where reading rs("description") twice caused
  empty values (IsNull check consumed the field value)
- Change all device pages to read description field once using
  `description = rs("description") & ""` pattern
- Add deviceDescription variable in displaydevice.asp
- Fix machinetypeid mapping: IDF=17, Camera=18 (was swapped)
- Add model dropdown fix to include currently assigned model
- Add server application tracking feature
- Various other improvements and fixes

Files affected:
- displaydevice.asp, displaylocationdevice.asp
- deviceaccesspoint.asp, deviceserver.asp, deviceswitch.asp
- devicecamera.asp, deviceidf.asp
- savenetworkdevice.asp, networkdevices.asp

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deviceidf.asp

@@ -36,8 +36,8 @@
 			Response.End
 		End If
 
-		If Not IsNull(rs("idfname")) Then idfname = rs("idfname") Else idfname = ""
-		If Not IsNull(rs("description")) Then description = rs("description") Else description = ""
+		If Not IsNull(rs("idfname")) Then idfname = rs("idfname") & "" Else idfname = ""
+		description = rs("description") & ""
 		If Not IsNull(rs("maptop")) Then maptop = rs("maptop") Else maptop = ""
 		If Not IsNull(rs("mapleft")) Then mapleft = rs("mapleft") Else mapleft = ""
 		If Not IsNull(rs("isactive")) Then isactive = rs("isactive") Else isactive = 1