test Event#end_time=
test Event.ordered_by_ui_field
improve tests for Event.search_*_grouped_by_currentness.
test Event#dates.
test Event#duration.
remove unused Event#time_range method.
refactor Event.search_tag_grouped_by_currentness.
TRAVIS Y U NO TEST ME
generate local coverage reports in addition to sending those to coveralls.
test Event#location.
Merge pull request #98 from botandrose/increase_event_test_coverage

Increase Event test coverage to 100%