WIP refactor limelight graph stuff
WIP refactor limelight graph continued
Merge branch 'master' into wip-refactor-graph-stuff

Conflicts:
	app/assets/javascripts/extensions/views/graph/graph.js
	app/assets/javascripts/extensions/views/graph/line.js
	app/assets/javascripts/extensions/views/graph/stack.js
	app/assets/javascripts/extensions/views/graph/stackedbar.js
	app/assets/javascripts/extensions/views/timeseries-graph/line.js
	app/assets/javascripts/extensions/views/timeseries-graph/stack.js
	app/assets/javascripts/extensions/views/timeseries-graph/timeseries-graph.js
fix tests
tidy up / centralise tests
simplify graph inheritance
adding unmonitored as positive aspect of all uptime calculations
fix stackedbar component
remove unmonitored time from total and uptime calculations
Merge pull request #151 from alphagov/uptime_with_unmonitored

remove unmonitored time from uptime/downtime calculations
Rename drop-offs module, update copy
Update copy in info button
Update lpa drop-off test
Merge pull request #153 from alphagov/lpa_copy_changes

Lpa copy changes
Merge pull request #150 from alphagov/wip-refactor-graph-stuff

Refactor graphs
merge master into evl-availability-modules