Improve life_adminlevel global variable security

Security through obscurity.  A script kiddy would have to know the
"life_adminlevel_<blah> new name to change it.  Using vanilla
life_adminlevel wouldn't work any more.  This does not address hex
editor attacks on the global variable on the client machine.
Comment and decruft fn_spawnConfig.sqf

Removed all the duplicate code.  Added comments as a matter of course so
future generations aren't driven crazy by the spaghetti.
Improve life_coplevel global variable security

More security through obscurity.  Make it harder to script coplevel
upgrades without doing it properly.
Scroll wheel pickaxe usage

Make using a pickaxe less tedious.  No need to do USE for the pickaxe.
Just scroll wheel when in mining country.
Syntax error
Redo 2 scroll wheel pickaxe usage

Using player global variable life_inv_pickaxe instead of trying to read
the dialog box stuff.  It cannot be read when not active.
Merge pull request #3 from jwo7777777/Untested-201402261

Basic testing done.