Update Drawing Tool to 1.2.0
lightweight_activity_helper runnable_activity_path optional parameters.

Pass through optional parameters to path helpers in lightweight_activity_helper.rb

Part of [#55931526 ]

https://www.pivotaltracker.com/story/show/55931526
ActivityController & SequenceController #show goes to latest work.

By default the show actions in these controllers will bring the user to
wherever they last left off in sequences and activities.

These actions used to show the TOC (table of contents) aka index for the
activity or sequence.

The TOC is now only displayed if the param [:show_index] is passed in.

Part of [#55931526 ]

https://www.pivotaltracker.com/story/show/55931526
Show index page when user opens an activity for the first time

[#55931526]
Make sure that page numbers do not wrap

[#77488018]
Fix activity page numbers wrapping

[#77488018]
Do not clear response_key while showing activity index page

[#75825078]
Revert response key clearing, but redirect to URL based on current run

[#75825078]
Fix home button in activity page navigation

[#75825078]

It got broken due to run resume feature.
Use URLs with 'sequence' segment while pointing to activity index page

[#75825078]
Fix typo in haml template

[#75825078]
Uppdate #runnable_activity_path helper spec

[#75825078]
Add margin to activity page titles and introduction

[#78769826]
Add stamps to drawing tool, use drawing tool proxy hook

[#78976002]
Provide info to iframe interactives about the current run's logged in status

[#78575882]
Support the interactive telling us it doesn't want the user to reset the interactive state

[#78740544]
Update Drawing Tool to version 1.2.2
Merge branch 'staging' into production