metomi/rose#580: fix file page bug
metomi/rose#580: fix file page bug.

This fixes the handling of unexpected variables in file sections.
Merge pull request #1081 from benfitzpatrick/580.rose-edit-bad-file-content

#580: rose edit: fix file page unexpected content
Update CHANGES.md
Fix instability in test battery
rose bush: jobs: clickable cycles and task names

Rose Bush:
* index: Re-order buttons c.f. title text.
* jobs: Create links for cycle and task name in each row for listing
  jobs in the linked cycle or task.
* jobs: Submit fail and signalled jobs should now stand out.
* cycles: Change link style to be the same as job lists.

Also remove old HTML files from old suite log viewer.
Merge pull request #1083 from matthewrmshin/fix-unstable-tests

Fix instability in test battery
Doc: update versions of install dependencies
Merge pull request #1084 from matthewrmshin/rose-bush-links

rose bush: jobs: clickable cycles and task names
Doc: *Cylc* instead of *cylc* where relevant
Merge pull request #1086 from matthewrmshin/rose-install-dependencies-versions

Doc: update versions of install dependencies