cylc/cylc#75: first attempt at single updater
metomi/rose#79: draft summary gui
cylc/cylc#79: fix summary gui
cylc/cylc#79: summary gui, panel applet draft, and site configuration
job file: send error from namerslv to /dev/null

Stop output of "/etc/resolv.conf does not exist".
Visualization settings override cylc-graph.
Merge pull request #546 from matthewrmshin/namerslv

job file: send error from namerslv to /dev/null
Tidier grouping logic.
cylc/cylc#79: summary apps - fixes
cylc/cylc#79: add polling configuration
cylc/cylc#79: include stop states in cylc gui.
cylc/cylc#79: summary GUI - rename conf directory
Merge pull request #544 from arjclark/cylc-graph-fix-visualisation

cylc graph: use visualization settings
cylc/cylc#79: configurable hosts and fix duplicates
cylc/cylc#79: summary GUI - improve stop info
Removed old CLI switch reference.
Merge pull request #550 from arjclark/doc-tidy

removed old cylc gui CLI switch reference
cylc/cylc#79: fix cat-state error handling and centralise
cylc/cylc#79: summary GUI - update instructions
cylc/cylc#79: fixes