[$80] Remove `Follow` functionality

[jmgasper]

@atelomycterus - We're going to remove Follow, sticking only with the Watch functionality where users are notified by email. There's been confusion on the differences between the two, and we're going to be updating the nav to remove My Discussions from the left anyways.

Please let me know if you have concerns - we can just hide both the Follow button and My Discussions for now.

[jmgasper]

Challenge https://www.topcoder.com/challenges/e43be9b8-cb71-4b58-a9ba-598e3c6e2697 has been created for this ticket.

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[jmgasper]

Challenge https://www.topcoder.com/challenges/e43be9b8-cb71-4b58-a9ba-598e3c6e2697 has been assigned to obog.

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[sdgun]

@jmgasper Recent discussions, All categories and roundtables have the View option which will not make sense once follow option is removed

[jmgasper]

@sdgun - Good point, thanks. @atelomycterus - We can remove that View dropdown as well.

[atelomycterus]

@jmgasper What about REST API? Should I remove it from REST API?
'/groups/{id}/member/{userid}' - Get a member details (watch status/follow status)
'/groups/{id}/member/{userid} - Update watch status and/or follow status for a member.'

[atelomycterus]

@jmgasper

Changes

Please apply PRs:
#374,
topcoder-platform/forums-groups-plugin#52.
Thanks!

1. Status: Fixed. Show/Hide 'My Discussions' in the left nav in config.php:

$Configuration['Vanilla']['Discussions']['ShowMineTab'] = false;

2. Status: Fixed. I've fixed Vanilla controllers. Now we can enable/disable this feature using Vanilla EnableCategoryFollowing key.

$Configuration['Vanilla']['EnableCategoryFollowing'] = false;

3. Status: Fixed. EnableCategoryFollowing is supported in Groups Plugin. If EnableCategoryFollowing= false:

• don't insert/update rows in Gdn_UserCategory table.
• don't clear/update FollowCategory cache
• hide Follow/unfollow categories in a group page:
  

Questions

Let me know about REST API. Should we support 'EnableCategoryFollowing' in REST API or remove 'follow' status from REST API?
if 'EnableCategoryFollowing' = false:

• don't return follow status for '/groups/{id}/member/{userid}' - Get a member details (watch status/follow status)
• don't use/ignore 'follow' for '/groups/{id}/member/{userid} - Update watch status and/or follow status for a member.'

[jmgasper]

@atelomycterus - We can remove this from the REST API as well, but that's lower priority.

[atelomycterus]

@jmgasper Please apply PRs:

• Issues-372: removed 'follow group categories' challenge-forum-processor#50
• Issues-372:removed follow from REST API forums-groups-plugin#53
  Thanks!

We can remove this from the REST API as well, but that's lower priority.

Fixed. Challenge forum processor was updated.