Merge pull request #291 from mikeh/master

MOBSDK-726
MOBSDK-745: AlfrescoWorkflowProcess model object has a variables property which is not consistent with AlfrescoWorkflowTask
Merge branch 'master' of https://github.com/Alfresco/alfresco-ios-sdk
Fixed merge issue.
Updated filter value constant names following recent rename of status filter.
Merge pull request #292 from gavincornwell/master

Updated filter value constant names following recent rename of status filter
MOBSDK-746: Favorites cache is mixing up favorite sites and favorite folders.
Merge branch 'topic-MOBSDK-746'
Merge pull request #293 from gavincornwell/master

MOBSDK-746: Favorites cache is mixing up favorite sites and favorite folders.