resolve conflict
Merge branch 'master' of https://github.com/EdgeComputing/cats
add error handler - hub allocation/project code allocation
Merge branch 'master' of https://github.com/EdgeComputing/cats
Merge branch 'master' of https://github.com/EdgeComputing/cats
refactor warehouse controller, refactor warehouse views
Merge branch 'master' of https://github.com/EdgeComputing/cats
add hub owner crud
refactor hub owner controller/service/views
resolve conflict
resolve conflict
letter template