Feature: di.html

[matthewv192]

• Ported the old TorQ html code into the new kdb-x module format - dropped the \d .html namespace and the global :: assigns, loads via use now with a proper export list.
• Logging is injected in now and is required (init will complain if you don't pass it), same idea for the .z handlers - you can inject them or let it wire them up itself. No more hard-coded .dotz.set calls.
• Tidied up init so it takes one config dict and won't double-wire the handlers if you call it twice.
• General cleanup to match the style guide - one statement per line, lowercase names (renamed readpagereplaceHP to readpagereplacehostport), etc. Broke up some of the denser one-liners too.
• Fixed up jstsiso8601 so it's vectorised and handles nulls, and got rid of the deprecated "z" datetime cast. Added docs and k4unit tests, all passing.