Password should be invisible to the accessibility services (#362)

app/src/main/res/layout/fragment_ssh_keygen.xml

@@ -35,6 +35,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:hint="@string/ssh_keygen_passphrase"
+                android:importantForAccessibility="no"
                 android:inputType="textPassword" />
         </android.support.design.widget.TextInputLayout>
 

app/src/main/res/layout/git_passphrase_layout.xml

@@ -15,6 +15,7 @@
         android:layout_marginTop="8dp"
         android:ems="10"
         android:inputType="textPassword"
+        android:importantForAccessibility="no"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />