Remove stacks from site-activity dashboard
Rearrange device type graph to help linelabels
Remove unused code from line graph view
Conditionally add linelabel to line graph

Based on configuration.
Add applications graph to visa dashboard
Register to vote words tweaks
Update format of axes for content dashboards.

Graphs that have been unstacked also need axes formatted as percent
rather than integer, so that their tables display correctly.
Merge pull request #602 from alphagov/feature/unstack-graphs

Remove stacks from site-activity dashboard
Remove "digital" from waste carriers cost

As requested by @cliffshepp.
Remove bodyparser as we never use it EVER!
Removed method-override as we never use it.
Merge pull request #605 from alphagov/feature/remove-body-parser

Remove bodyparser and method-override as we never use them EVER!
Remove multi-stats module from no-realistic-dashboard.

This module is no longer used on the housing dashboard, and not
compatible with the Refactor of Doom. Remove it so that we can
still use no-realistic-dashboard.
Remove multi-stats module from codebase.

We no longer use this module anywhere and we have no plans to use
it anywhere. So we have agreed to remove it entirely.

Some of the sub-views used by multi-stat items were actually used
elsewhere in the codebase, so I have kept these but moved them
out of multi-stat-specific directories. The affected views are
sparkline, headline and delta views, and these are used by the
user satisfaction and realtime modules.

Note that spec.realtime.js now throws a D3 console error in the
Jasmine tests. I'm not sure why this is: the graphs are rendering
fine in the browser.
Updated packages.
Upgraded packages to latest versions where possible
Removed xtend from the codebase.

We already use lodash so that's enough for now...
Merge pull request #606 from alphagov/feature/upgrade-packages

Feature/upgrade packages
Merge pull request #603 from alphagov/bugfix/remove-multistats-module

Remove multi-stats module from no-realistic-dashboard.
Merge pull request #592 from alphagov/visa-applications-graph

Add applications graph to visa dashboard