Issue #943772 by jpsoto, yched, catch, bojanz, pillarsdotnet, steinmb: Fixed field_delete_field() and others fail for inactive fields.

Issue #1164852 by plach: Default the 'translatable' bit on fields to FALSE for fields created in the UI, to match those created by the API.

#915906 by jbrown, yched: Fixed Deleting node type with only instance of a field leaves the field in a strange zombie state

- Patch #943742 by Stalski: fields only appearing when custom field is added in manage display screen.

- Patch #914792 by sun, moshe weitzman, effulgentsia: custom element properties entirely override default element info properties.

Trying #886152 again: Fixed All fields are hidden after the administrator newly configures a view mode to not use 'default' display.

#886152 by yched, pwolanin, hefox, chx, rszrama, ksenzee: Fixed All fields are hidden after the administrator newly configures a view mode to not use 'default' display.

- Patch #882694 by mgifford, sun, ksenzee, bleen18, yched: add missing form element titles for accessibility.

- Patch #140783 by sun, chx, effulgentsia, David_Rothstein, webchick: a select list without #default_value() always passes form validation.

#616240 follow-up by yched, dereine, marvil07: Make Field UI screens extensible from contrib - part II.

#838040 by justinrandell, azriprajwala: Fixed notices thrown when adding a stock field to a stock content type.