Merge pull request #15 from LifeWatchINBO/design

Rename charts to explorer and update README
Remove aggregated by day code
Remove commented drawCharts line
Refactor drawMap function

- Split drawing charts and drawing map in 2 functions.
- Remove remnants of data aggregated by day code
Remove data controller
Chart tab queries backend. Fixes #19

Tabs are now used to swithc between data type (distance from colony
vs distance travelled). Switching between the chart tabs will do a
new backend call to the cartodb API.
Fix selection of datatype for go button
Make calendar scale dynamic
Round legend scale
Fix #18
update style
Spaced tabs
Indent divs
Fixes #13

Instead of restyling the roadmap, a custom style is created and
displayed along the default roadmap and satellite base layers.
Clean up and alter CSS
Merge branch 'style-side-by-side' of https://github.com/LifeWatchINBO/bird-tracking-analysis into style-side-by-side
Style bird data list
Merge branch 'design' into style-side-by-side
Replace satellite by hybrid base layer
Add clear selection button