#MM-12130 changes for custom service terms (#9450)

* #MM-12130 changes for custom service terms

* Fixed styling

* Added getServiceTerms API

* removed unnecessary panic

* removed custom service terms text from flat config

* reverted user sql store as those changes are no longer needed

* added tests

* Updated a config key to be more standard

* Added copyright info

* Loading service terms only if the feature is enabled

* Loading service terms only if the feature is enabled

* removed unused index

* added createservice termns API

* made a param to bool instead of string

* added createservice termns API

* review fixes

* fixed styling

* Minor refactoring

* removed saveConfig and loadConfig magic

* added empty service terms text check to createServiceTerms API

* refactoed some urls to be terms_of_service instead of service_terms

* removed check for support settings

* changed URLs in tests

* removed unused code

* fixed a bug

* added service termd id in conif

* fixed a test

* review fixes

* minor fixes

* Fixed TestCreateServiceTerms

web/web_test.go

@@ -37,13 +37,13 @@ func StopTestStore() {
 }
 
 type TestHelper struct {
-	App             *app.App
+	App *app.App
 
-	BasicUser       *model.User
-	BasicChannel    *model.Channel
-	BasicTeam       *model.Team
+	BasicUser    *model.User
+	BasicChannel *model.Channel
+	BasicTeam    *model.Team
 
-	SystemAdminUser   *model.User
+	SystemAdminUser *model.User
 }
 
 func Setup() *TestHelper {