Bug 510227: Tweak the new tab button location, r=froystig

mobile/chrome/content/browser.xul

@@ -188,6 +188,7 @@
         <!-- Left toolbar -->
         <vbox id="tabs-container" class="panel-dark" flex="1">
           <richlistbox id="tabs" onselect="BrowserUI.selectTab(this.selectedItem);" onclick="BrowserUI.hideTabs();" onclosetab="BrowserUI.closeTab(this)"/>
+          <toolbarspring/>
           <hbox id="tabs-controls">
             <toolbarbutton id="newtab-button" class="button-image" command="cmd_newTab"/>
           </hbox>

mobile/themes/hildon/browser.css

@@ -588,6 +588,7 @@ autocompleteresult.allbookmarks > .autocomplete-item-tags:after {
 #tabs-container {
   -moz-padding-start: 1.2mm; /* allow the thumbnails to get close to the edge */
   -moz-padding-end: 2.2mm; /* core spacing */
+  padding-bottom: 2.2mm; /* core spacing */
   border-right: 3px solid #262629; /* keep pixels */
 }
 
@@ -601,7 +602,7 @@ autocompleteresult.allbookmarks > .autocomplete-item-tags:after {
 
 #tabs-controls {
   margin-top: 2.2mm; /* core spacing */
-  -moz-box-pack: center;
+  -moz-box-pack: start;
 }
 
 richlistitem[type="documenttab"] {

mobile/themes/wince/browser.css

@@ -374,6 +374,7 @@ autocompleteresult.allbookmarks > .autocomplete-item-tags:after {
 #tabs-container {
   -moz-padding-start: 0.6mm; /* allow the thumbnails to get close to the edge */
   -moz-padding-end: 1.1mm; /* core spacing */
+  padding-bottom: 1.1mm; /* core spacing */
   border-right: 3px solid #262629; /* keep pixels */
 }
 
@@ -387,7 +388,7 @@ autocompleteresult.allbookmarks > .autocomplete-item-tags:after {
 
 #tabs-controls {
   margin-top: 1.1mm; /* core spacing */
-  -moz-box-pack: center;
+  -moz-box-pack: start;
 }
 
 richlistitem[type="documenttab"] {