WL-3242 Add a reset poll button

Puts the reset button at the bottom of the page, next delete. Allows
multiple polls to be reset.
WL-3242 Fix Javadoc, indentation and security checks
WL-3242 Move userCanDeletePoll method

Moving userCanDeletetPoll method from ExternalLogic.java to PollListManager.java
WL-3242 Fix indentation in PollToolBean
WL-3242 Removing unecessary catch
Merge pull request #1 from ox-it/WL-3242

WL-3242 Add a reset poll button