Remove sequence title in info panel (redundant). completes: [#56610720]

https://www.pivotaltracker.com/story/show/56610720
Fix jasmine tests that I broke with changes made in #f9200b4
use acts_as_list methods when removing an activity from a sequence.

[#56356420]
https://www.pivotaltracker.com/story/show/56356420
Merge branch 'master' into staging

* master:
  use acts_as_list methods when removing an activity from a sequence.
  Fix jasmine tests that I broke with changes made in #f9200b4
  Remove sequence title in info panel (redundant). completes: [#56610720]