Merging mahendra007-s's patch for Bug #1062849. Clicking the 'more info' link now brings up a new page with the information; very important for users who coudldn't see the mouseover before.

hange "todos" to "tasks" and display as "To Do"

* moved some sub navs to template tags ...

* generic MailingListView now detects list owners/moderators even if those permissions are not required
* fixed some permission bugs in the list navigation
* changes to the list member page:
    - list owners and moderators
    - "add owner" feature
    - "add moderator" feature
* several layout changes:
    - sub navigation items now have an "active" state
    - changed backgrounds of page and content containers
* added "add owner" feature
* added "add moderator" feature
* several text changes