Add hint to encrypt field

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/EncryptKeyCompletionView.java

@@ -88,10 +88,6 @@ public class EncryptKeyCompletionView extends TokenCompleteTextView<KeyItem>
 
     @Override
     protected KeyItem defaultObject(String completionText) {
-        // TODO: We could try to automagically download the key if it's unknown but a key id
-        /*if (completionText.startsWith("0x")) {
-
-        }*/
         return null;
     }
 

OpenKeychain/src/main/res/layout/encrypt_asymmetric_fragment.xml

@@ -40,6 +40,7 @@
         <org.sufficientlysecure.keychain.ui.widget.EncryptKeyCompletionView
             android:id="@+id/recipient_list"
             android:layout_width="match_parent"
+            android:hint="@string/label_to"
             android:minHeight="56dip"
             android:paddingLeft="8dp"
             android:paddingRight="8dp"

OpenKeychain/src/main/res/values/strings.xml

@@ -150,7 +150,7 @@
     <string name="label_write_version_header_summary">"Writes 'OpenKeychain v2.7' to OpenPGP signatures, ciphertext, and exported keys"</string>
     <string name="label_use_num_keypad_for_yubikey_pin">Use number keypad for YubiKey PIN</string>
     <string name="label_asymmetric_from">"Sign with:"</string>
-    <string name="label_to">"Encrypt to:"</string>
+    <string name="label_to">"Encrypt to"</string>
     <string name="label_delete_after_encryption">"Delete files after encryption"</string>
     <string name="label_delete_after_decryption">"Delete after decryption"</string>
     <string name="label_encryption_algorithm">"Encryption algorithm"</string>