Merge pull request #123 from zivchang/next

[Bug fixing] PTSDK-1157. Correct exception type
update spec for lbs, systeminfo, messaging, account and filesystem
PTSDK-1365: Messaging API update
Merge pull request #124 from jiachenghu/next

PTSDK-1365: Messaging API update
PTSDK-1374 update filestem module
Merge pull request #126 from jiachenghu/next

PTSDK-1374 update filestem module
PTSDK-1271:
 -Fixed network status unsync problem
 - Changed Network type to be Cellular Network on/off
PTSDK-1183
 - Removed magnetic and ambient from sensor panel
PTSDK-1375 remove sensor module
Merge pull request #127 from jacobchen/next

PTSDK-1271:
PTSDK-1376 update application module