[fusion-trac] #664: Re-instate Google Maps script appending client-side

[Fusion]

#664: Re-instate Google Maps script appending client-side
----------------------------+------------------------
        Reporter:  jng      |        Owner:  jng
            Type:  defect   |       Status:  assigned
        Priority:  P2       |    Milestone:  Future
       Component:  Widgets  |      Version:  2.0
        Severity:  Major    |     Keywords:
         Browser:  All      |  External ID:
Operating System:  All      |        state:  New
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 Although the unified entry point work removed loading Google Maps script
 tags client-side, upon second thought: It is possible to "safely" load
 Google Maps on the client-side (don't `document.write` the script tags,
 rather `document.createElement` the required script tags just like we do
 for the widgets).

 This way, we don't need to force a breaking migration change to the new
 unified entry point and existing users can still remain on the
 `index.html` entry point.

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Ticket URL: <http://trac.osgeo.org/fusion/ticket/664>
Fusion <http://trac.osgeo.org/fusion>
Fusion is a web-mapping application development framework for MapServer and MapGuide OS.