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>

addknowledgebase.asp

@@ -61,10 +61,10 @@
                 </div>
 
                 <div class="form-group">
-                  <label for="appid">Topic <span class="text-danger">*</span></label>
+                  <label for="appid">Topic</label>
                   <div class="input-group">
-                    <select class="form-control" id="appid" name="appid" required>
-                      <option value="">-- Select Topic --</option>
+                    <select class="form-control" id="appid" name="appid">
+                      <option value="">-- Select Topic (Optional) --</option>
 <%
 	Dim strSQL, rsApps
 	strSQL = "SELECT appid, appname FROM applications WHERE isactive = 1 ORDER BY appname ASC"