SF-3149 Only update resource permissions when necessary

[pmachapman]

This PR speeds up synchronizing of popular resources on live by:

• Only updating the permissions for users in the target project when a resource is a source to a project.
• Updating all permissions on a resource when the DBL has flagged that the resource has been updated.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.91%. Comparing base (bee4856) to head (998e10e).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2938   +/-   ##
=======================================
  Coverage   80.91%   80.91%           
=======================================
  Files         533      533           
  Lines       31260    31261    +1     
  Branches     5079     5063   -16     
=======================================
+ Hits        25294    25296    +2     
- Misses       5206     5218   +12     
+ Partials      760      747   -13     

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