feat(ingest): add provider polling interval config

SD-1023
tests(e2e): added prepopulation support; fixed login spec
tests(e2e): synced latest changes from liveblog
tests(e2e): synced from liveblog
fix(e2e: users): updated to work with real server
chore: fixed dependencies merge conflict
tests(e2e): synced with latest liveblog changes
[SD-786] Priority, Slugline and Category is added to order list
Merge pull request #611 from petrjasek/devel

feat(ingest): add provider polling interval config
Merge pull request #531 from actionless/fix-e2e

tests(e2e): added prepopulation support; fixed login and users specs
Merge pull request #615 from akintolga/devel

[SD-786] Priority, Slugline and Category is added to order list
Merge remote-tracking branch 'upstream/devel' into devel