update submodules
update datalogcompiler submodule
update datalogcompiler submodule
Merge branch 'master' into production
Merge branch 'master' into production
myria-web: set high logging level

Apparently the default is INFO, let's make it WARN. INFO is used heavily
throughout raco.

Also, the datalogcompiler had a stray print statement that led to a lot
of spurious, and costly, output.

Fix #79.
update submodule location and links
update datalogcompiler submodule
Merge branch 'production'

Conflicts:
	datalogcompiler
	submodules/myria-python
	submodules/requests