FIX: missing unlock in espHandler.
CLEANUP: unreachable code warnings.
FIX: harden esp/edi for calling without a HttpConn instance.
FIX: Return 404 when esp components cannot be found.
FIX: always zero numRows and numCols in edi get table dimensions.
FIX: invoking appweb with explicit IP:PORT on command line.
FIX: invoking appweb with explicit IP:PORT on command line (cont)
FEATURE: Add logCallback for request completion.
FIX: unreachable code warnings.
FIX: theme.less font-awesome path.