Move permissions code into app package (#5146)

* Move permissions code into app package

* Revert getPosts permission

utils/authorization.go

@@ -3,7 +3,9 @@
 
 package utils
 
-import "github.com/mattermost/platform/model"
+import (
+	"github.com/mattermost/platform/model"
+)
 
 func SetDefaultRolesBasedOnConfig() {
 	// Reset the roles to default to make this logic easier
@@ -170,4 +172,11 @@ func SetDefaultRolesBasedOnConfig() {
 		break
 	}
 
+	if Cfg.TeamSettings.EnableTeamCreation {
+		model.ROLE_SYSTEM_USER.Permissions = append(
+			model.ROLE_SYSTEM_USER.Permissions,
+			model.PERMISSION_CREATE_TEAM.Id,
+		)
+	}
+
 }