Unmaintained [Nobita] Social Groups (Teams/Guilds/Clubs) 2.8.6

# 2.8.6
* Fixed some icons outside of tile (#Ref: https://nobita.me/threads/1662/)
* Dropped use 'Roboto' font in some places.
* Added option to feature group with limited time. (#Ref: https://nobita.me/threads/1517/)
* Added feature `Merge groups`. Controlled by permission `Merge groups`.
* Fixed cannot view secret groups.
* Other improvements...

# 2.8.4
* Fixed missing phrases
* Remove unused phrases
* Fixed `InvalidArgumentException: Unknown widget type (*)`
* Fixed sidebar style issues
* Fixed Promoting Member: "Permissions" show "No" entirely (Ref: https://nobita.me/threads/1620/)
* Added option to archive all group forums. (New option: `Archive Group Forums`)
* Drop option `Display Order` while creating an forum. Now use automatically create display order value. Base `10000` then increment by `50`
* Fixed does not show group tabs in thread view in some cases.
* Fixed recent widget only show 1 thread (Ref: https://nobita.me/threads/1629/)
* Added column `event_count` into table `xf_team`. Must be rebuild group counters to update values.
* Fixed guest cannot view closed groups
* Other improvements...

Fixed some errors.

Notable Changes:

• Fixed forums tabs still show on closed groups for guest.
• Fixed users has grant permission cannot manage group forums
• Fixed when merge users. The target users does not contains exist groups of source users.
• Added confirmation when remove an member
• Fixed updated last group activity while rebuild group in ACP
• Fixed category counter does not work in some cases
• Many other bugs was fixed.

Please running Rebuild Group Categories and Rebuild Groups to recalculate counters.

Fixed cannot join to any groups.

Thank you for using this add-on. This release continue fixed some issues from previous version and logic issues.

If you have any trouble while using add-on please take a few minutes report to support forum section: https://nobita.me/#nobita-social-groups.16

Notable Changes:

• Fixed invalid event date formatting (#ref: https://nobita.me/threads/date-format-and-event-alert.1380/)
• Remove unused CSS blocks. (#ref: https://nobita.me/threads/css-error-on-watched-categories.1389/#post-8957)
• Added more member role `Add Forum`, `Edit Forum` and `Delete Forum` (#ref: https://nobita.me/threads/2-7-8-only-group-creators-can-make-forums.1385/)
• Fixed event end date jump to invalid date. (#ref: https://nobita.me/threads/event-end...-01-unix-default-date-when-not-selected.1406/)
• Fixed members of group cannot see invites of other members. (#ref: https://nobita.me/threads/members-tab-invited-does-not-show-invited-members.1401/)
• Improvement send reminders to inactive members. (#ref: https://nobita.me/threads/members-get-50-alerts-reminder-message.1400/)
• Fixed show invalid messages in newsfeed (#ref: https://nobita.me/threads/are-in-this-group.1409/)
• Added default event description when import events without description key in file (#ref: https://nobita.me/threads/imported-event-data-messed-up.1405/)
• Fixed filter members not work as expecting. (#ref: https://nobita.me/threads/what-does-this-filter-exactly-do.1391/)
• Fixed restrict maximum of cover file size not work correctly. (#ref: https://nobita.me/threads/maximum-cover-size-in-bytes.1414/)
• Ability allow user see their own moderated posts (#ref: https://nobita.me/threads/group-members-can-not-see-their-own-moderated-posts.1402/)
• Fixed bypass post moderation does not work as expected. (#ref: https://nobita.me/threads/bypass-post-moderation-does-not-seem-to-work.1397/)
• Removed unsupported group media filter (#ref: https://nobita.me/threads/group-media-filter-for-albums-groups-never-have-albums.1392/)
• Fixed comment box cannot edit when have some errors (#ref: https://nobita.me/threads/2-7-8-text-field-on-wall-blocked-when-you-reach-too-many-characters.1383/)
• Fixed undefined variable while reporting group (#ref: https://nobita.me/threads/error-when-reporting-groups.1421/)
• Improvement the forums list when have no forums have been added. (#ref: https://nobita.me/threads/an-improvement-to-the-team_forum_list-template.1419/)
• Fixed multiple admin issues. (#ref: https://nobita.me/threads/super-admin-permissions-multiple-issues.1425/)
• Remove closed groups for guests. (#ref: https://nobita.me/threads/usergroup-permission-cannot-see-closed-groups.1423/)
• Cannot deleted user (#ref https://nobita.me/threads/cannot-remove-guest-from-group.1442/)
• Fixed user has grant permission cannot update group rules (#ref: https://nobita.me/threads/cant-edit-groups-rules.1466/)
• Fixed incorrect feature group phrases (#ref: https://nobita.me/threads/feature-your-group-for-admin.1465/)

Notable Changes:

• Added option Force update groups rule with global predefined rule
• Migrate FullCalendar to version 3.x (#ref: https://nobita.me/threads/missing-dates-in-events.1369/)

• Fixed some bugs.

Notable Changes:

• Added tools auto fixing miss columns in table structure.
• Fixed call to undefined function get_model()

Notable Changes:

• Fixed media of groups still show to index page in some cases
• Fixed undefined variable in Javascript
• No need redirect to reposition cover when an cover uploaded
• Fixed some bugs

Special thank to @Alfa1