Tiny color tweak
Condensing code & fileMDT fallbacks

Ternary expression to get same saveType results
Create a new $filemtime var and set to 1000000 for non Linux systems
We now have something to compare with
(Tho will always be this on Windows etc)
Remove redundant full tree code

No longer need to consider depths as we are getting folder/file listings
for 1 branch at a time. For this reason, the opening UL will always be
block and the closing one shown when it's the last item and $GET
location is available (ie, not the root).