Pr 9039 (#9187)

* MM-11065: Allow to search and get archived channels from the API

* Fixing more tests

* Add some unit tests

* Add includeDeleted parameter to session permissions check function

* More test fixing

* Adding archive channels list in channels search

* Add restriction for archived channel edition

* Reverting permissions checks modification

* Changed the query parameter to include_deleted

* Enable search archive channels as true by default

* Adding tests for verify search on deleted channels

* Allowing to override archive channels during the imports

* Fixed test

* Search in archive channels from the API must be explicitly requested

* Removing includeDeleted parameter from GetChannelByName and GetChannelByNameForTeam

* Back to ViewArchivedChannels config

* Fixing tests

* Reverting GetChannelByName parameter

* Add include deleted parameter on GetChannel functions in plugins api

* Fixing tests

app/channel_test.go

@@ -175,7 +175,7 @@ func TestJoinDefaultChannelsExperimentalDefaultChannels(t *testing.T) {
 	th.App.JoinDefaultChannels(th.BasicTeam.Id, user, false, "")
 
 	for _, channelName := range defaultChannelList {
-		channel, err := th.App.GetChannelByName(channelName, th.BasicTeam.Id)
+		channel, err := th.App.GetChannelByName(channelName, th.BasicTeam.Id, false)
 
 		if err != nil {
 			t.Errorf("Expected nil, got %s", err)