Fix T37441: Could not assign tasks to self (via the "Assigned To" box)

Issue was caused by our database having login "watch" which is
apparently an object's method in firefox.

Added workaround for this into the code.

webroot/rsrc/externals/javelin/lib/control/typeahead/source/TypeaheadSource.js

@@ -185,6 +185,9 @@ JX.install('TypeaheadSource', {
       this._raw[obj.id] = obj;
       var t = this.tokenize(obj.tokenizable || obj.name);
       for (var jj = 0; jj < t.length; ++jj) {
+        if (typeof this._lookup[t[jj]] == "function")
+          this._lookup[t[jj]] = [];
+        else
           this._lookup[t[jj]] = this._lookup[t[jj]] || [];
         this._lookup[t[jj]].push(obj.id);
       }