Fixes #3886, ATMs no longer log you in automagically

Silly security level 0 ruined everything
Added a tiny sanity check as well to avoid runtimes
BugFix: Cult Ghosts...after a bit of professional advise from chinsky.

Problem:  Cult members can't use the rune to see ghosts, then beat ghosts over the head.  it was being intercepted by _onclick and processed there and only displaying an angry red notice
that you hit that ghost.  Ghost didn't become visible, it disappeared soon after moving off the rune.

Solution:  Made an attackby for ghosts to check when they are being beat up by cultist with books, now they appear.

Minor feature change:  Now if a visible ghost gets hit it will give a different message than the standard "Ghost is pulled through from the other side".
Merge pull request #3923 from Ccomp5950/master

BugFix: Cult Ghosts...after a bit of professional advise from Chinsky.
Merge pull request #3920 from Kilakk/master

Fixes #3886, ATMs no longer log you in automagically
Bugfix (3778) Power cells in exosuits have the same amount of power as a highcap cell

Issue:  Mechs are created/spawned with a high-capaciter cell that is named "Power cell" and confuses some of the less bright roboticists and their beards.

Solution:  Shave the roboticist, and also renamed the cell that spawns to properly reflect it's higher capacity.
Merge pull request #3924 from Ccomp5950/exosuit_bugfix

Bugfix (3778) Power cells in exosuits have the same amount of power as a highcap cell
Merge remote-tracking branch 'bay12/master' into actual