DOC: Update samples
FIX: appweb conditional ESP_MODULE when building esp.
REGEN: doc.
FIX: Reinstate deprecated "file" auth store. MPR_CONFIG and spascal.
FIX: add libmpr, libhttp and libpcre as explicit libs in libappweb.me
FIX: esp-server missing "client" directory definition.
FIX: esp compile outside of esp app directories.

Handle setting appName from directory name.
Add "generate" and "paks" directory definitions.