Changes to bookmark caching. Bust it when a Collection update.
Merge pull request #1594 from ariana-paris/Tests-Add-index-update-step-to-flaky-tests

Tests add index update step to flaky tests
Merge pull request #1487 from sarken/issue_3884

3884 Plain text work deletion email should not say story
Merge pull request #1592 from LadyOscar/issue_3958

Issue 3958: add more languages to the Support form page
Merge pull request #1481 from scottsds/issue_3880

Issue 3880: having a co-author on some but not all chapters breaks anonymity
Merge pull request #1503 from sarken/issue_3771

3771 Tag Sets without visible tag lists are hidden
Merge pull request #1522 from sarken/issue_3913

3913 Tag status options on wrangling pages need span_if_current
Merge pull request #1524 from sarken/issue_3910

3910 Change heading and button text on wrangling pages
Merge pull request #1403 from sarken/issue_3819

3819 Better deletion confirmation text for works and chapters
Merge pull request #1469 from sarken/issue_3782

3782 Add Save Without Posting button to Edit Tags
Merge pull request #1490 from sarken/issue_3627

3627 Showing hidden additional tags should not alphabetize them
Merge pull request #1548 from sarken/issue_3931

3931 Remove unnecessary left alignment on meta dt and p
Merge pull request #1408 from sarken/issue_3823

3823 Make it possible to delete series when JavaScript is disabled
Merge pull request #1586 from cswatt/issue_3787

Issue 3787 - making it more obvious that Collection Names can't have spaces
Merge pull request #1588 from cswatt/issue_3868

Issue 3868: stop wide media from being cut off by workskin
Issue 3610: Create way to expire bookmark cache
Merge pull request #1341 from sarken/issue_3766

3766 HTML showing on My Assignments when user has multiple assignments
Merge pull request #1486 from sarken/issue_3867

3867 Stats page should only show stats for posted works
Merge pull request #1476 from someonefromthewater/issue_3164_redux

Issue 3164 - Inconsistent Navigation on Stats Page
Merge pull request #1448 from sarken/issue_3853

3853 Child works should be listed in the last posted chapter