Use an en dash to separate title and sector name.

A dash makes more typographical sense than a hyphen here, and elsewhere
on GOV.UK we tend to use an en dash surrounded by spaces, rather than an
em dash without spaces (or with hair spaces).
Compile mustache templates before running JS features
Gitignore templates.js, and explain why
StatisticsAnnouncements can haz multiple topics

Instead of just one topic, multiple topics can be selected for a given
statistics announcement.
Migrate existing topics to new join model
Standardise referencing of associations

There is no need to go via the magic _ids method; we can work with the
association directly.
Use taggable content containers for efficiency
Adding translations for static text on CIPs

www.agileplannerapp.com/boards/173808/cards/5962

/government/organisations/land-registry/about.cy
had missing Welsh translations for some static
text, added those.
Cleanup deprecated HtmlAttachment attributes

This completes the work to move HtmlAttachment body content to the
GovspeakContent model.
Merge pull request #1757 from alphagov/cleanup-html-attachments

Cleanup deprecated HtmlAttachment attributes
Correct case study format advice

This was incorrectly set to the advise for consultations.
Ensure topics on frontend are escaped correctly
Merge pull request #1787 from alphagov/multi-topics-on-announcements

Multiple topics on statistics announcements
Merge pull request #1784 from alphagov/alert-for-missing-mustache-templates

Compile mustache templates before running JS features
Merge pull request #1790 from alphagov/fix-case-study-advice

Correct case study format advice
Merge pull request #1783 from alphagov/en-dash-in-collection-header

Use an en dash to separate title and sector name
Merge pull request #1788 from alphagov/translations-for-cip

Welsh translations for static text on CIPs