Fixed issue #341 and added unit test
Merge pull request #342 from erikbern/fix-341

Fixed issue #341 and added unit test
Move reading of configuration out of EnvironmentParamsContainer global scope

Reading the configuration at EPC instantiation (env_params) allows additional
configuration files to override default-scheduler-host.

Also added reading of default-scheduler-port from configuration for consistency.

Change-Id: Idf68ed7b21d3ae65dd233587eaf284df2fa6fcf7
Merge pull request #343 from edwardnewett/master

Move initial reading of configuration out of global scope
Issue #338: Add “priority” property to task, to take into account in scheduler.get_work
Issue #338: add documentation about task priorities
Issue #338: added tests for handling priorities in CentralPlannerScheduler
Issue #338: improved documentation a bit more