support for EC2 IAM roles with Amazon S3 file store/backup
refactor multiple instances of S3 key check logic to single variable
Allow translating "Log In" button in HTML code.
Not initializing variable for looping if unused in loop
Merge pull request #2661 from techAPJ/update-translations

Update Translations
FIX: from Sam: post_actions.targets_topic should not be nullable. Delete duplicate likes and prevent them from happening again.
FEATURE: add additional fields in user list export
/admin/docker --> /admin/upgrade
FIX: handle deferred and disagreed post actions
Merge pull request #2662 from techAPJ/patch-3

FEATURE: add additional fields in user list export
UX: When clicking an activity date, pop up a little menu with options to
go to beginning or end of the topic.
Version bump to v0.9.9.17
clarify on /top behavior
move arrow for topic entry
topic jump buttons shouldn't be selectable
Add missing translation
remove a few strings on admin in favor of glyphs
Merge pull request #2645 from xfix/translate-log-in

Allow translating "Log In" button in HTML code.
Merge pull request #2663 from gschlager/i18n_fix01

Add missing translation
make entire first/last entry popup unselectable