Fixes issue #501

This is a partial fix. The font used is an open source Dyslexia font, so we might need to change the actual font file. As part of this fix, the webserver needs to be configured to serve otf files. I have done that on test by adding the following lines to the web.config file:

        <staticContent>
            <remove fileExtension=".otf" />
            <mimeMap fileExtension=".otf" mimeType="font/otf" />
        </staticContent>