Updatd with 3.1 testing

1. Changes the names to 3.1 (SNAPSHOT and SNAPSHOT with dependencies
files)
2 Added APIData.java for common API strings.  Can be used both by
coding server and client APIs for consistency.
3.  Updated POST and GET methods to use UTF-8 settings and to set the
expected content headers
Updated
Updated jar files
Updated with the latest Search and Filtering testing
Updated with offset/limit testing
Updated with encoding changes and username api
Merge pull request #6 from mdanilkis/master

Merge Latest Android App Wrapper to Core Wrapper