Java: Move away from deprecated HTTP client API after libraries update.
Java: Updating IntelliJ settings to Java 7 and correct the name of libraries files.
Run the Python tests on our continuous build.
Remove warnings from several Java source files.
Remove a FIXME comment that no longer applies.

This comment was referring to curlpp, which we no longer use.
Avoid the dependency on the makefile from Go.

This avoids the extra step of "make golibs", and also leaves Go in control of
compilation flags.
Minor cleanups in the proto files.
Merge pull request #17 from eranmes/idea_fix

Java: Follow-up on httpclient & httpcore libraries update by moving away from deprecated HTTP client API and updating IntelliJ settings.