MBS-7555: ISE when changing series order numbering
Support text attribute values of 0
MBS-7549: release editor URL seeding doesn't work anymore
MBS-7562: can't add release label without a label
MBS-7563/MBS-7567: Add sortname bubble iff there is a sortname

The initialize_guess_case function had a fixed list of entity types
having a sortname, and tried to initialize a sortname bubble (in
addition to the guess case bubble for the entity name) on all edit
forms for those entities. It did not discriminate between the main
entity edit form and the alias edit form.

This caused two problems:
- When sortnames were removed from labels and areas, they were not
  removed from the list. The function hence still tried to initialize
  a sortname bubble, causing a type error that prevented unrelated
  code from running. (MBS-7563)
- The aliases for entities without sortname (such as works and places)
  do have a sortname, but their edit form didn't have the sortname
  bubble initialized. (MBS-7567)

Both is fixed by dropping the fixed list, and instead testing if the
current form has a sortname field/bubble, to initialize them if and
only if they are present.
MBS-7576: Added relationships of the wrong cardinality are invisible
Merge remote-tracking branch 'bitmap/mbs-7555' into hotfix2-2014-05

* bitmap/mbs-7555:
  Support text attribute values of 0
  MBS-7555: ISE when changing series order numbering
Merge remote-tracking branch 'bitmap/mbs-7549' into hotfix2-2014-05

* bitmap/mbs-7549:
  MBS-7549: release editor URL seeding doesn't work anymore
Merge remote-tracking branch 'bitmap/mbs-7576' into hotfix2-2014-05

* bitmap/mbs-7576:
  MBS-7576: Added relationships of the wrong cardinality are invisible
Merge remote-tracking branch 'bitmap/mbs-7562' into hotfix2-2014-05

* bitmap/mbs-7562:
  MBS-7562: can't add release label without a label
Merge remote-tracking branch 'chirlu/mbs-7563' into hotfix2-2014-05

* chirlu/mbs-7563:
  MBS-7563/MBS-7567: Add sortname bubble iff there is a sortname
Merge branch 'kill-mac' into hotfix2-2014-05

* kill-mac:
  Revive deleted users (digest) test
  MBS-7547: Kill MAC authentication, which is buggy and unused.
Merge branch 'hotfix2-2014-05'

* hotfix2-2014-05:
  MBS-7576: Added relationships of the wrong cardinality are invisible
  MBS-7563/MBS-7567: Add sortname bubble iff there is a sortname
  MBS-7562: can't add release label without a label
  MBS-7549: release editor URL seeding doesn't work anymore
  Support text attribute values of 0
  MBS-7555: ISE when changing series order numbering
  Revive deleted users (digest) test
  MBS-7547: Kill MAC authentication, which is buggy and unused.
Merge branch 'master' into beta