UPGRADE: mpr
REGEN: doc and projects

MPR adds mprHoldBlocks, mprPauseGC APIs
FIX: Pause GC at key points

Pause GC when parsing config file directives. Simplifies writing directives a little.
TEST: Fix unit tests

Fix cache.ejs not emitting JSON
FIX: HTTP

- Client route including duplicate ‘/‘ (cosmetic)
- Uri parsing with query and #reference components if the query or fragment has embedded “http://“
- Sleuthing the extension when URI has embedded http:// in the query.
FEATURE: Support esp.preload to preload controllers

REFACTOR: How esp handler loads modules. Common up the code for loading apps, controllers and views.
FEATURE: Add esp —silent mode.

Make normal mode more verbose.