Makes Machine Overridden machines no longer attack borgs

Adds a 'silicon' faction, all AIs, borgs and machine overridden machines
are in this faction.
Also adds some feedback text to malf powers, gives span classes to some
already existing feedback messages.

Fixes a few typos and errors in descriptions.

/red is not welcome, removed.
mkay, Giacom's solution seems more elegant, dropping the faction-related changes

now this is only a feedback message-related PR.
Merge pull request #3031 from VistaPOWA/malf_powers

Adds better feedback messages to malf powers.