deploy: add check for required EUCA variables
deploy: remove references to F-Secure internal GTN network
frontend: common constants module
distcilib: client library with task support
frontend: fix jobs/builds/artifacts handle_request prototype
Small naming corrections on unit tests
frontend: validators for build IDs
frontend: implement build functionality
frontend: dispatched: cleanups
frontend: request: function to return file handle for request data
frontend: response: function to send response from file handle
frontend: added artifact management
Merge pull request #1 from hnousiainen/master

Job, build and artifact management
Merge remote-tracking branch 'upstream/master'