Marloss tweaks

Small package of tweaks:
colors fungal blossoms cyan, so you can tell them apart from trees
Changes fungal-flowers symbol to cyan T, from grey F
Fungal haze now has a nontrivial chance to convert TREE/YOUNG terrain to
more fungal blossoms
Fungal haze is now marginally more infectious
Fungal haze now checks for gas mask or equivalent for dangerous-field
purposes, as intended
Warning messages, fix flag

Might be helpful to let folks know that the blossoms are spreading, and
to make sure that converted is properly set.
Friendly bots FTW

This will allow chicken walkers and tank drones that are Friendly to use
their firepower on the player's behalf.

And apparently I never actually connected the chicken walker's improved
firepower, and nobody caught that.  :-/  This corrects that mistake.

In any event, the control laptop is about to become MUCH more useful.
Yep, the drug fights were pretty common in the fields.  Dials it back to the same numbers as science teams.
And the science teams too

Seemed kinda high, so knocked 'em back to helicrash levels.
Merge remote-tracking branches 'dda/pr/8903', 'dda/pr/8905' and 'dda/pr/8916' into dda-master

* dda/pr/8903:
  Warning messages, fix flag
  Marloss tweaks

* dda/pr/8905:
  Friendly bots FTW

* dda/pr/8916:
  And the science teams too
  Yep, the drug fights were pretty common in the fields.  Dials it back to the same numbers as science teams.