Change notification messages to use toast popups rather than embeded divs
* Created ui.notifyError and ui.notifySuccess methods in ui.js
* Deprecated comments on the old methods in uiframework.js
Changed handing of published .reset events - fields are reset to their default values
rather than blank values
Fixed openmrsDialogSuccessCallback reference error on dialog closes
Fixed ui.pageLink in ui.js so that it encodes URL parameters
Changed notification toast message stay time to 5 seconds
Merge pull request #13 from rowanseymour/master

Some fixes to popup dialogs and notification messages