Small changes.
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe

Conflicts:
	ringMeMaybe/ringMeMaybe/Classes/Controllers/IncomingCall/IncomingCallViewController.m
Parsed location and date field from recent call. Showing location and date on recent calls screen.
Getting voicemail url. Expand/hide recent calls functionality. Added recent call section header. Added NSDateUtilities - showing formatted date.
- minor servermanager fix
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe
NotificationManager code improvements; - XMLWrapper code improvements
NotificationManager and ServerManager constant names refactor
Voicemail file download added.
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe

Conflicts:
	ringMeMaybe/ringMeMaybe/Classes/Model/Managers/Server/ServerManager.m
	ringMeMaybe/ringMeMaybe/Classes/Model/Managers/Server/XML/XMLWrapper.m
- server manager result check logic refactored;
- nsdateutilities date formatter created only once
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe

Conflicts:
	ringMeMaybe/ringMeMaybe/Classes/Model/Managers/Server/ServerManager.m
- refactor user credits data type
Added audio playing methods. Made recent call cell expandable.
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe

Conflicts:
	ringMeMaybe/ringMeMaybe/Classes/Controllers/RecentCalls/RecentCallsViewController.m
- UI strings moved to StringConstants
- SIP classes refactor
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe
Animate slider when playing audio. Hide RecentCallCell slider when playback finished.
Merge branch 'master' of https://bitbucket.org/halcyonmobile/ringmemaybe