added generic API call that can take any MHRequestOption and make the API call. improved the MHRequestOptions to deal with post requests. Updated the people list to use the generic API call when refreshing or paging so it can deal with any list of people (e.g. All Contacts, Contacts for a label, Contacts for a leader. All have different API calls but need to be displayed in the mhpeoplelistviewcontroller.
Merge branch 'master' of https://github.com/michaelharro/MissionHub-iOS
merged changes
Got search working on several lists, except for contact assignments