Fixes #251, UI refresh problem with page snapshot

Also fixes snapshot add breakage when another tab is selected caused by blur() fix from other day

chrome/chromeFiles/content/scholar/itemPane.js

@@ -108,7 +108,7 @@ var ScholarItemPane = new function()
 					break;
 			}
 			
-			if (boxes.length==1)
+			if (boxes && boxes.length==1)
 			{
 				boxes[0].inputField.blur();
 			}

chrome/chromeFiles/content/scholar/xpcom/itemTreeView.js

@@ -176,6 +176,10 @@ Scholar.ItemTreeView.prototype.notify = function(action, type, ids)
 		if(action == 'add')
 		{
 			if (ids.length===1){
+				// Reset to Info tab
+				this._treebox.treeBody.ownerDocument.
+					getElementById('scholar-view-tabs').selectedIndex = 0;
+					
 				this.selectItem(ids[0]);
 			}
 		}