remove headless gem which was used by ui test earlier

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge pull request #142 from Henry-CF/headless

remove headless gem which was used by ui test earlier
add rake to Gemfile

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge pull request #143 from Henry-CF/rake

add rake to Gemfile
add frontend codes for actionitems
Merge remote-tracking branch 'vmw-tmpst/master'
add status board for dashboard page
change action item font and opacity
Merge pull request #144 from whywhy36/action_items

Action items frontend
Merge branch 'master' of https://github.com/vmw-tmpst/heroapp-LetsHire into schedule_interviews
[48381403] code skeleton for 'add/delete' interview table line

In this part, API for update multiple interviews is almost ready

Signed-off-by: Henry Chen <hchen@vmware.com>