Fix cutoff of buttons in Spell Check (r=kin, sr=hewitt) and Image Properties (r=brade, sr=ben) dialogs, bugscape b=10888

editor/ui/dialogs/content/EdImageProps.xul

@@ -90,7 +90,7 @@
       tooltip = "aTooltip" tooltiptext = "&MoreFewerButton.tooltip;"
       persist = "more"/>
     <spacer class="bigspacer"/>
-    <groupbox style="padding-left: 8px; padding-right: 8px">
+    <groupbox orient="horizontal" style="padding-left: 8px; padding-right: 8px">
       <caption label="&previewBox.label;"/>
       <hbox id="preview-image-box" align="center">
         <spacer flex="1"/>

editor/ui/dialogs/content/EdSpellCheck.xul

@@ -72,7 +72,7 @@
     <rows>
       <row flex="1">
         <!-- BUG! setting class="MinWidth20em" on tree doesn't work (width=0) -->
-        <tree rows="8" class="list" id="SuggestedList" onselect="SelectSuggestedWord()">
+        <tree rows="8" class="list" id="SuggestedList" onselect="SelectSuggestedWord()" style="min-height:6em">
           <treecolgroup>
             <treecol flex="1"/>
           </treecolgroup>