MBS-6635: Updated ReleasedTooEarly to work with release events
MBS-6635: Update the ReleasesToConvert report now that there is no tracklist table
MBS-6635: Update the SeparateDiscs report to use the release_country table
MBS-6635: Update the SuperfluousDataTracks report now that there is no tracklist table
MBS-6635: Update the TracksWithSequenceIssues report now that there is no tracklist table
MBS-4730: Do not show alias sort names when they equal the alias name

If an alias has a sort name that is equal to its name, then the
name column spans over the sort name column. This is primarily of
benefit for search hints, which currently always have a sort name
equal to the name (which is also enforced by the database).
MBS-5863: Beginning of API to load work attributes

Adds Work->load_attributes, which can be called on works with no attributes.
MBS-5863: Add the ability to load free-text work attributes
MBS-5863: Add the ability to load finite-valued work attributes
MBS-4730: Refactor duplication out of components/aliases.tt
MBS-5863: Correctly load finite-valued work attribute values
MBS-5863: Add Work->set_attributes

Allows setting free-text and finite-valued work attributes for a given work.
MBS-6561: Deserialize the 'life-span' 'ended' property

Unfortunately due to SEARCH-316 we need to do a little bit more work
to deserialize this than should be necessary, by converting the string
representation of a boolean into a boolean.
Merge branch 'mbs-6635' into beta
Merge branch 'mbs-6561' into beta
Merge branch 'mbs-4730' into beta
Merge branch 'mbs-5863' into beta
Merge branch 'mbs-5863-setting' into beta