Make TDSP more closely match with AML implementation

[dermcnor]

The AML implementation of TDSP is nice in that it adds numbering to the folders under code. It makes it easy for anyone, even those that aren't as familiar with the process, to understand ordering. Additionally, the use of all lower case in the AML template seems easier to type and deal with.

[dermcnor]

I'm just resurfacing this for discussion. I can change of course if we are in agreement that it makes sense/ is worth it.