Reformat timeline.js to match openstack eslint configuration
Reformat timeline.js to match openstack eslint configuration

timothyb89/stackviz-ng,dklyle/stackviz-ng,dklyle/stackviz-ng,openstack/stackviz,openstack/stackviz,timothyb89/stackviz-ng,openstack/stackviz,timothyb89/stackviz-ng,timothyb89/stackviz,timothyb89/stackviz,timothyb89/stackviz