More Omnipod pump manager related fixes and improvements (#429)

+ Fix implementation bug in PodInfoPulseLogPlus limiting pod time to 9 bits
+ Fix pod pump managers not to crash if an incorrect response type is returned
+ Add safeguards for possible edge cases to prevent 0x31 faults before pod is set up
+ Adjust activationTimeString to better match pulseLogPlusString's output

Config.xcconfig

@@ -1,5 +1,5 @@
 APP_DISPLAY_NAME = iAPS
-APP_VERSION = 2.3.0
+APP_VERSION = 2.3.1
 APP_BUILD_NUMBER = 1
 COPYRIGHT_NOTICE =
 DEVELOPER_TEAM = ##TEAM_ID##