add REST documentation for search module
move common models out of module
remove server from REST endpoint keys
remove quotation marks from description to keep parser happy
use enum syntax for model parameters
add REST documentation
Email HTML improvements

* Reduce max-width of indented activity comment containers
* Expand width for the activity summary
move REST models to separate file
move REST models to separate file
add REST models from common module
Using new activity-comment form for rendering nested comments in the email template
add REST documentation for principals module
convert body parameters to form parameters
follow up from review
clarify return value description
clarify return descriptions; remove body params
follow up from review (initial)
follow up from review
additional review followup
correct documentation