Make header text and tertiary text color themeable

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

@@ -29,7 +29,7 @@
         android:id="@+id/add_user_id_comment"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:textColor="@color/tertiary_text_light"
+        android:textColor="?attr/colorTertiaryText"
         android:singleLine="true"
         android:lines="1"
         android:maxLines="1"

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

@@ -28,7 +28,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginBottom="2dp"
                 android:text="@string/label_name"
-                android:textColor="@color/tertiary_text_light"
+                android:textColor="?attr/colorTertiaryText"
                 android:textAppearance="?android:attr/textAppearanceSmall" />
 
             <TextView
@@ -44,7 +44,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginBottom="2dp"
                 android:text="@string/label_email"
-                android:textColor="@color/tertiary_text_light"
+                android:textColor="?attr/colorTertiaryText"
                 android:textAppearance="?android:attr/textAppearanceSmall" />
 
             <TextView
@@ -182,4 +182,4 @@
             style="?android:attr/borderlessButtonStyle" />
     </LinearLayout>
 
-</RelativeLayout>
+</RelativeLayout>

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

@@ -124,4 +124,4 @@
             android:layout_marginBottom="8dp" />
     </LinearLayout>
 
-</ScrollView>
+</ScrollView>

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

@@ -55,4 +55,4 @@
         android:clickable="true"
         android:layout_centerVertical="true"
         android:background="?android:selectableItemBackground" />
-</RelativeLayout>
+</RelativeLayout>

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

@@ -25,7 +25,7 @@
             android:layout_height="wrap_content"
             android:text="@string/none"
             android:layout_gravity="center_vertical"
-            android:textColor="@color/header_text" />
+            android:textColor="?attr/colorHeaderText" />
     </LinearLayout>
 
     <LinearLayout
@@ -34,4 +34,4 @@
         android:layout_height="wrap_content"
         android:orientation="vertical"
         android:visibility="gone" />
-</LinearLayout>
+</LinearLayout>

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

@@ -60,4 +60,4 @@
         tools:src="@drawable/status_signature_revoked_cutout_24dp"
         />
 
-</LinearLayout>
+</LinearLayout>

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

@@ -34,7 +34,7 @@
             android:id="@+id/user_id_item_comment"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:textColor="@color/tertiary_text_light"
+            android:textColor="?attr/colorTertiaryText"
             android:text="comment"
             android:textAppearance="?android:attr/textAppearanceSmall" />