[Apache Bloodhound] #466: Add a dismiss button to widget_alert

[Apache Bloodhound]

#466: Add a dismiss button to widget_alert
------------------------------+-----------------------
 Reporter:  rjollos           |      Owner:  rjollos
     Type:  enhancement       |     Status:  new
 Priority:  minor             |  Milestone:  Release 6
Component:  ui design         |    Version:
 Keywords:  widget bootstrap  |
------------------------------+-----------------------
 Add a [http://twitter.github.com/bootstrap/components.html#alerts dismiss
 button] to `widget_alert.html`.

 This is a simple one-line addition:
 {{{
 #!python
 <button type="button" class="close" data-dismiss="alert">&times;</button>
 }}}

 Which results in:

 [[Image(DismissAlert.png)]]

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Ticket URL: <https://issues.apache.org/bloodhound/ticket/466>
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