Fix formatting of time on activities screen.
Fix formatting of time on activities screen.

syoung-smallwisdom/ResearchUXFactory-iOS,syoung-smallwisdom/BridgeAppSDK,Sage-Bionetworks/BridgeAppSDK,Sage-Bionetworks/BridgeAppSDK,Sage-Bionetworks/BridgeAppSDK,Sage-Bionetworks/BridgeAppSDK,syoung-smallwisdom/ResearchUXFactory-iOS,Sage-Bionetworks/BridgeAppSDK,syoung-smallwisdom/ResearchUXFactory-iOS,syoung-smallwisdom/BridgeAppSDK,syoung-smallwisdom/ResearchUXFactory-iOS