Wikipedia results: fix images not updated across results

Some results fields were forgotten by the "smarter update"
from a38881a9.

frontend/ui/widget/dictquicklookup.lua

@@ -810,7 +810,11 @@ function DictQuickLookup:update()
         self.text_widget:resetScroll()
     elseif not self.is_html and self.stw_widget then
         -- Re-use our ScrollTextWidget (self.stw_widget)
+        -- Update properties that may change across results (as done in DictQuickLookup:_instantiateScrollWidget())
         self.text_widget.text_widget.text = self.definition
+        self.text_widget.text_widget.lang = self.lang and self.lang:lower()
+        self.text_widget.text_widget.para_direction_rtl = self.rtl_lang
+        self.text_widget.text_widget.images = self.images
         -- NOTE: The recursive free via our WidgetContainer (self[1]) above already free'd us ;)
         self.text_widget.text_widget:init()
         -- Scroll back to top

frontend/ui/widget/textboxwidget.lua

@@ -244,6 +244,7 @@ end
 -- Split the text into logical lines to fit into the text box.
 function TextBoxWidget:_splitToLines()
     self.vertical_string_list = {}
+    self.line_num_to_image = nil
 
     local idx = 1
     local size = #self.charlist