Added distinct incident categories
Improved category UI
Added incident count by category.
Merge branch 'incident-type-summary' into develop
Added "load more" button
Implemented loading historical incidents.

Clicking the button at the end of the table fetches the 50 previous
incidents keyed off the date of the oldest incident in the log.
Removed console.log
Timer resets only if new data was returned.
Fixed "bug out" on timeout
fixed spinner text

spinner text was not reset after an error was cleared.
Using localStorage instead of Window to store incidents.
initial load now only gets newest data
Added about page
Added about page
Merge branch 'develop'

Conflicts:
	index.html