Graphite targets are now aliased
Quoted graphite target aliases
Graph widgets can now configure their null filter
Graphite backend also needs to allow the null filter to be configurable
Moved align_time() from Summarizer to the utils module (as round_time()), added floor_time()
Graph widgets now have a config option for displaying datapoints aligned to the start of the time range
GraphWidget's handle_render_request() should call utils.floor_time(), not utils.floor()
Set LValue widget null filter to skip
Graph widgets can now have a configurable y_min
Merge branch 'feature/issue-48-graphite-targets-need-to-be-aliased' into develop
Merge branch 'develop' into feature/issue-49-graph-widgets-need-to-be-able-to-configure-their-null-filter
Merge branch 'feature/issue-49-graph-widgets-need-to-be-able-to-configure-their-null-filter' into develop
Merge branch 'develop' into feature/issue-50-allow-graph-widgets-to-only-display-datapoints-since-the-start-of-their-time-range
Merge branch 'feature/issue-50-allow-graph-widgets-to-only-display-datapoints-since-the-start-of-their-time-range' into develop
Merge branch 'develop' into feature/issue-52-lvalue-widgets-should-skip-nulls-not-zeroize-them
Merge branch 'feature/issue-52-lvalue-widgets-should-skip-nulls-not-zeroize-them' into develop
Merge branch 'develop' into feature/issue-53-graph-widgets-need-a-configurable-ymin

Conflicts:
	diamondash/widgets/graph/graph_widget.py
Merge branch 'feature/issue-53-graph-widgets-need-a-configurable-ymin' into develop