Major: fix config reading, improve commands, instant hp update w/reload (more details below)

* guest & admin health moved to separate config
* fixed bugs reading config file
* removed plugin.yml permissions as no longer needed
* added pheal as alias
* start of possible regain modification feature (commented out)
* added Zarius' Log class for console log message "verbosity"
* added more debug messages (verbosity.high)
* admin permission now "phadmin.*" to avoid conflict with health groups
* /ph update|add|reload now update all players max health instantly
* defaulthealth is set if no player permission found
* ophealth is set for any OP players