ImportKeys: Remove "Import all keys" from menu

- This feature is now available in a bottom bar when in basic mode

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

@@ -70,8 +70,9 @@
                     android:drawablePadding="8dp"
                     android:drawableRight="@drawable/ic_file_download_white_24dp"
                     android:gravity="center_vertical"
-                    android:text="@string/menu_import_all_keys"
-                    android:textColor="#ffffffff" />
+                    android:text="@string/btn_import_all"
+                    android:textAllCaps="true"
+                    android:textColor="?android:attr/textColorPrimary" />
 
             </RelativeLayout>
 

OpenKeychain/src/main/res/menu/import_keys_file_fragment.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item
-        android:id="@+id/import_all_keys"
-        android:title="@string/menu_import_all_keys" />
-
-</menu>

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

@@ -134,7 +134,6 @@
     <string name="menu_certify_fingerprint_phrases">"Confirm with phrases"</string>
     <string name="menu_share_log">"Share log"</string>
     <string name="menu_change_password">"Change password"</string>
-    <string name="menu_import_all_keys">"Import all keys"</string>
 
     <string name="menu_keyserver_add">"Add"</string>
 
@@ -1575,6 +1574,7 @@
     <string name="security_token_create">"Hold Security Token against the back of your device."</string>
     <string name="security_token_reset_or_import">"This Security Token already contains a key. You can import the key using the cloud or reset the Security Token."</string>
     <string name="btn_import">"Import"</string>
+    <string name="btn_import_all">"Import all"</string>
     <string name="btn_reset">"Reset"</string>
     <string name="security_token_import_radio">"Import key"</string>
     <string name="security_token_reset_radio">"Reset Security Token"</string>