tabindexes in forms should be properly set
Description of problem:
In many forms in webUI there are missing tabindexes set for submit buttons (and also cancel buttons).
So if users fill the form and reach the last input field, then they cannot use TAB + ENTER to submit the form, because focus jumps somewhere else.
As example see these pages:
Content > GPG Keys > Create GPG Key (/gpg_keys/new)
Content > Lifecycle Environment > Create Environment Path (/lifecycle_environments/lifecycle_environments/1/new)
Content > Sync Plans > Create Sync Plan (/sync_plans/sync_plans/new)
Content > Content Views > Create New View (/content_views/new)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. open one of the pages mentioned above
2. fill the form, navigate through it using TAB
3. see that Submit button is skipped
When tabindexes are not set at all
for example: Content > Products > Create Product (/products/new)
then Submit button is not skipped and all work just fine.