Bulk refresh asset locators expiration date and reduce the executable size

* Ability to select multiple assets  and refresh all the associated locators expiration dates to a fixed(100 years) date (this could be further improved by allowing the user to specify the expiration date in a custom dialog).
* Reference the same icon in all the forms. This has reduced the both the repository size and the executable size to 7 MB (it was 135 MB)