FIX: don't offer the "Something Else" flag reason to TL0 users since they don't have permission to send private messages

lib/guardian/post_guardian.rb

@@ -35,8 +35,9 @@ module PostGuardian
       # don't like your own stuff
       not(action_key == :like && is_my_own?(post)) &&
 
-      # new users can't notify_user because they are not allowed to send private messages
-      not(action_key == :notify_user && !@user.has_trust_level?(SiteSetting.min_trust_to_send_messages)) &&
+      # new users can't notify_user or notify_moderators because they are not allowed to send private messages
+      not((action_key == :notify_user || action_key == :notify_moderators) &&
+        !@user.has_trust_level?(SiteSetting.min_trust_to_send_messages)) &&
 
       # no voting more than once on single vote topics
       not(action_key == :vote && opts[:voted_in_topic] && post.topic.has_meta_data_boolean?(:single_vote))

spec/components/guardian_spec.rb

@@ -75,12 +75,12 @@ describe Guardian do
       expect(Guardian.new(user).post_can_act?(post, :notify_moderators)).to be_falsey
     end
 
-    it "returns false for notify_user if private messages are enabled but threshold not met" do
+    it "returns false for notify_user and notify_moderators if private messages are enabled but threshold not met" do
       SiteSetting.enable_private_messages = true
       SiteSetting.min_trust_to_send_messages = 2
       user.trust_level = TrustLevel[1]
       expect(Guardian.new(user).post_can_act?(post, :notify_user)).to be_falsey
-      expect(Guardian.new(user).post_can_act?(post, :notify_moderators)).to be_truthy
+      expect(Guardian.new(user).post_can_act?(post, :notify_moderators)).to be_falsey
     end
 
     describe "trust levels" do