Syncing translation files with gtk3 branch.

rtdata/languages/English (US)

@@ -200,6 +200,7 @@
 !FILECHOOSER_FILTER_TIFF;TIFF files
 !GENERAL_ABOUT;About
 !GENERAL_AFTER;After
+!GENERAL_APPLY;Apply
 !GENERAL_ASIMAGE;As Image
 !GENERAL_AUTO;Automatic
 !GENERAL_BEFORE;Before
@@ -215,6 +216,7 @@
 !GENERAL_NO;No
 !GENERAL_NONE;None
 !GENERAL_OK;OK
+!GENERAL_OPEN;Open
 !GENERAL_PORTRAIT;Portrait
 !GENERAL_SAVE;Save
 !GENERAL_UNCHANGED;(Unchanged)