[JIRAALIGN-1582] Advance Configuration Filter: 500 error on Iteration filter.

Issue Summary

A 500 Internal server error is displayed on the iteration field in advance configuration filter.

Steps to Reproduce

1. Make sure you have an iteration ID that is higher than 32767.
2. Open advance configuration filter

Expected Results

Iterations should load fine.

Actual Results

500 error is thrown
The below exception is thrown in splunk

   error_category: Microsoft VBScript runtime 
   error_column: -1
   error_description: Overflow: 'CInt'
   error_file: /AjaxFiles/AjaxMenuLoad.asp
   error_line: 28

Workaround

None.