Propagate error message when query aggregation fails.
Use generic query error code.
Added IntelliJ project file extension to .gitignore
Classes implementing the 'close()' method now implement the java.io.Closeable interface to enable the use of java7 try-with-resources construct
corrected case in servlet
Assed time stamp utility methods
Added Key.toString() method.  Minor cleanup.
Accept Closeable pull request.
Deprecate old Key constructor.
AER-2630: Add missing remove() function to lmap.  Also, add missing lmap and llist examples.
Also, AER-2589: Add range() function to Java Client.
[LDT Examples: Java Client] : Update LDT Examples in Java Client to exercise remove() and range() functions.
Support passing list/map to client lua functions in queryAggregrate().
LDT Java Client: Show example of larger scale insert for LLIST.
Update version 3.0.27
Support setting LuaConfig.SourceDirectory from command line (i.e. java -Dlua.dir="directorypath")
Use 	LuaCache.class.getClassLoader().getResourceAsStream(path);
instead of
ClassLoader.getSystemResourceAsStream(path);
when loading lua resource files.