Disable expiration menu on inactive group

Fixes #6007
// FREEBIE

src/org/thoughtcrime/securesms/ConversationActivity.java

@@ -510,6 +510,10 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
   }
 
   private void handleSelectMessageExpiration() {
+    if (isPushGroupConversation() && !isActiveGroup()) {
+      return;
+    }
+
     ExpirationDialog.show(this, recipients.getExpireMessages(), new ExpirationDialog.OnClickListener() {
       @Override
       public void onClick(final int expirationTime) {

src/org/thoughtcrime/securesms/components/ComposeText.java

@@ -133,6 +133,7 @@ public class ComposeText extends EmojiEditText {
 
     if (Build.VERSION.SDK_INT <= 13) return inputConnection;
     if (mediaListener == null)       return inputConnection;
+    if (inputConnection == null)     return null;
 
     EditorInfoCompat.setContentMimeTypes(editorInfo, new String[] {"image/jpeg", "image/png", "image/gif"});
     return InputConnectionCompat.createWrapper(inputConnection, editorInfo, new CommitContentListener(mediaListener));