NEON-1168 Added multi-series functionality to timeline selector chart, and stubbed out timeline series control
Add support for the stl2 time series analysis using OpenCPU.

Right now, this has to be enabled and a server specified in timelineSelector.js
Changed the default OpenCPU server to neon-opencpu, but time series analysis is still off by default.
NEON-1168 Added stacked multi-series feature to timeline selector (series no longer overlay on same axis)
Merge branch 'timeserieswidget' of https://github.com/NextCenturyCorporation/neon into timeserieswidget
NEON-1168 Fixed timeline series selector
NEON-1168 CSS adjustments
Make the opencpu library capable of turning off logging and alerts.
If the opencpu connection fails, then don't try to use it.

If the ocpu.seturl call fails, don't try to use it any more.
Also turn off opencpu logging and alerts.
Add NeonAngularDemo package for R.

A package is needed because OpenCPU expects all functions used by an
application to be in one package, and that package should include any
dependencies that it needs. Also, OpenCPU makes it much easier to do a single
function call than to execute a whole script.
Merge branch 'timeserieswidget'