Publication type advice changes

Changes to publication type advice for Notices, Decisions and
Regulations.
Move publication type Regulations to Use discouraged group.
Fix bug with showFormatAdviceForSelectedSubtype

Fix bug with showFormatAdviceForSelectedSubtype not removing
publication type advice after the publication type selection is changed.
Link reporter should ignore anchor links

www.agileplannerapp.com/boards/173808/cards/6121

Anchor links link to content within the page,
hence we should not report them as broken.
Data migration to remove anchor links

Anchor links should never have been part of
broken link reports, because they link to
sections on the same page.
Include sidekiq job parameters in errbit reports

The context hash (containing the parameters of the failed job) where not being
correctly passed to Airbrake, so were not appearing in exception reports.
Merge pull request #1793 from alphagov/fix-sidekiq-airbrake-integration

Include sidekiq job parameters in errbit reports
Merge pull request #1791 from alphagov/publication-type-guidance

Publication type guidance
Correct typo
Merge pull request #1795 from alphagov/fix-sidekiq-airbrake-config

Correct typo in sidekiq airbrake error handling
Merge pull request #1792 from alphagov/fix-broken-link-reporter

Link reporter should ignore anchor links
Make Frontend::StatisticsAnnouncementFilter less clever

The Frontend::StatisticsAnnouncementFilter was written to accept both slugs and
actual Topics/Organisations for reasons that are unclear. This opens it up to
potential shenanigans as the dynamic find_by_ methods appear to behave strangely
when handed a hash.
Merge pull request #1797 from alphagov/fixes-for-stats-announcements-filter

Make Frontend::StatisticsAnnouncementFilter less clever