Split javascript to ease reuse. Remove hardcoding.

[pau1ie]

On bbcmicro.co.uk I wanted a branded version of the index page which doesn't display the catalogue of discs. To allow this type of reuse and customisation I:

• Split out the javascript into a seperate file

• Removed the hard coded directory name 'disks' from the javascript

• Added the subdirectory to the disks.json

• Removed the directory from the display on the details page

The page works identically, apart from the disc details page which does display the directory. I thought this might be useful, so left this as it was though it would be possible to remove this if necessary.

[shawty]

Cheers Pau1ie I'll have a look through the PR tomorrow, it's a bit late now, I'm going to finish off tidying up these BBC Midis I created from VGS a few years ago, then call it a night :-)

FWIW I initially created the script for simple single file hosting, never thinking anyone would find it all that usefull :-)

[shawty]

Merged.