Bug fixes

1. Remove redundant constraint in table User
2. Change type of MapInfo in table map from TEXT to VARCHAR(100)
3. A typo in InsertCommunityInfo
4. Add SELECT * FROM InfoTypeList in SitesUp file.
Parent message ID should not be nullable

Parent message ID should not be nullable
Bug fixes

1. Fix some typo in InsertMessage sproc
2. Add a debug_msg sproc for debugging purpose
3. Add more test code in loadtestdata.sql file