Added microbial diversity visualisation to sample page. Still a work in
progress. Includes SQL for creating new database view used by the
visualisation code.
Microbial diversity visualisation files missed in previous push.
CSS tweaks to diversity visualisation. Added order by clause to
confident_taxonomy query as test DB doesn't appear to use the view's
default ordering.
More tweaks to microbial diversity visualisation CSS.
Fixed bug with Search function

Selecting a district and then all Systems was returning nothing
Minor search formatting changes

Select boxes are tabbed in
Show district, location and system on sample

site page
Changed layout of tiered location data on

samplesite page
Altered layout of bubble chart

Aligned bubble chart right, desc left
Small formatting changes
Added radial tree visualisation of microbial diversity. Altered
collapsible tree so it fans out from the centre better.
Added help text to microbial diversity visualisation.
Merge branch 'master' of https://github.com/1000Springs/web-app.git
Updated collapsible tree to highlight the branch clicked.
Added diversity visualisation function to allow user to expand/collapse
tree by taxonomy level. Selected branch now highlighted by colour shade
instead of black outline.
Collapsible tree node-click now shows node name heading regardless of
whether there is freebase data available or not.
Changed sample/site page to use tabs so content doesn't fall off the
bottom of the screen.
Updated microbial diversity sunburst chart to show abundance.
Moved chart drawing to document.ready event.
Added help text to the diversity tree, and moved the text panel to the
left to align with the chemistry bubble chart.