Added mergeChanged()
Removed test prefix/suffix
Fixed some small documentation issues
Improved popup's loading from url
Allow search(field, value) for numerical values, too

calling search(field, value) with a numerical value would do nothing, because it would only accept string values.
correctly handle spacer when inserted on runtime

When inserting a spacer into a toolbar with toolbar.add() or toolbar.insert(), the wrong html code was generated.
Merge pull request #235 from flesser/patch-2

Allow search(field, value) for numerical values, too
Merge pull request #237 from flesser/patch-3

Toolbar: Correctly handle spacer when inserted on runtime
Implemented onSelectionExtend and getRange() methods
Recompiled JS
Added onEditField event