#202 Allow nonstandard javascript file

[John Davidson]

Add a configuration variable to the web application so that a local javascript file may be used to enable non-standard functions

[John Davidson]

Build 2.1.0.269

Added the variable <LocalJavascript> to flexwiki.config, documented in flexwiki.config.template. Added the output to default.aspx.cs so that the javascript will be available when declared.