#2 a non-numeric value is allowed for the auto update interval

[Eduard Oajdea]

Adding a module with a non-numeric value for the auto update interval field is allowed.
Steps to reproduce:
1 Go to admin portal web page
2 Input valid values for username and password
3 Press the login button
4 Press the add module link
5 Input in the name field a string
6 Input a string instead of a number in the auto update interval input
7 Select “Local” from the dropdown input
8 Input a valid path from your file system of a directory with java files
9 Press the add button
Expected result: the page is invalidated and the auto update interval field is highlighted as invalid.
Actual result: the module list is displayed and the module is not added.