create hash of questions by tag
Fixed errant report deletion on edit (Closes #1811)
Fixed bug in report js, hopefully (Closes #1807)
Fixed bug with report edit view hide js, updated loading indicator
move build summary groups out of collection builder
Moved translatable test to spec and made independent from ELMO models
Made translatable discard blanks
Added canonical_name instead of _name, and tests
Renamed _name to canonical_name, removed _hint
Merge branch '1818_canonical_name' into develop
Fixed failing tests
add group by tag boolean field
Create TagGroup class
Test and simplify TagGroup; sort tag groups

Move grouping by tag into TagGroup for better clarity and code
organization and easier testing
long session timeout for dev env
Group by tag control in report edit pane
Display report grouped by tag with tag headers
Update display
update tag group test
Group by tag feature test