PLT-7206: Remove the "Delete Channel" option for private channels if you're the last channel member and policy setting restricts channel deletion (#7050)

* PLT-7206: UI changes. Removed last user in channel loophole, refactored code to clean it up, added differentiated support for public and private channels, added unit tests. Still need to implement server-side checks

* PLT-7206: All helper methods in channel_utils.jsx now accept the same three boolean variables in the same order and use the same boolean logic to check their values.

* PLT-7206: Added unit tests for showManagementOptions(...)

* PLT-7206: Fixed test case descriptions

* Added unit tests for showCreateOption(...)

* PLT-7206: Added unit tests for canManageMembers(...)

* PLT-7206: Removed last person in channel loophole from server-side code

* PLT-7206: Reverted config.json

* PLT-7206: Fixed double negatives in unit test names

* PLT-7206: PR feedback - Removed confusing comment and unused variable

1 files changed, 2 insertions, 4 deletions

diff --git a/webapp/components/new_channel_modal/new_channel_modal.jsx b/webapp/components/new_channel_modal/new_channel_modal.jsx
index 60c0271a7..721defe08 100644
--- a/webapp/components/new_channel_modal/new_channel_modal.jsx
+++ b/webapp/components/new_channel_modal/new_channel_modal.jsx
@@ -192,13 +192,11 @@ export default class NewChannelModal extends React.PureComponent {
             </a>
         );
 
-        const isAdmin = this.props.isTeamAdmin || this.props.isSystemAdmin;
-
-        if (!ChannelUtils.showCreateOption(Constants.OPEN_CHANNEL, isAdmin, this.props.isSystemAdmin)) {
+        if (!ChannelUtils.showCreateOption(Constants.OPEN_CHANNEL, this.props.isTeamAdmin, this.props.isSystemAdmin)) {
             createPublicChannelLink = null;
         }
 
-        if (!ChannelUtils.showCreateOption(Constants.PRIVATE_CHANNEL, isAdmin, this.props.isSystemAdmin)) {
+        if (!ChannelUtils.showCreateOption(Constants.PRIVATE_CHANNEL, this.props.isTeamAdmin, this.props.isSystemAdmin)) {
             createPrivateChannelLink = null;
         }