Adjustments to votewiki config

* Enable BlockDisablesLogin
* Add new electcomm and staffsupport groups
* Allow crat to add and remove crat/sysop/new groups
* Enable SecurePoll namespace for new SecurePoll setup

Bug: 72589
Change-Id: Ib42419ea56577f1feac31f89845efb80c3450a1d
Merge "Adjustments to votewiki config"