Allow CORS requests for packaged apps' zip files
remove add-on-specific fields from `Contribution` (bug 1026281)
Merge pull request #2222 from cvan/rm-statsdictfield

remove add-on-specific fields from `Contribution` (bug 1026281)
fix gross white bottom margin in devhub modals (bug 1027405)
Adds API endpoints and documentation for operator shelves.
Adds API endpoints and documentation for operator shelves.
Merge pull request #2217 from chuckharmston/opshelves

Adds API endpoints and documentation for operator shelves.
Fix migration conflict
Fixes broken tests introduced in 879a566
Removed unused fixtures
attach user token to comm attachments (bug 1027663)
Merge pull request #2232 from twiss/zip-cors

Allow CORS requests for packaged apps' zip files