Vars held in the settings dict (gv.sd)

from controller values (cvalues):
en:1	enabled (operation)
rd:0	rain delay (hours)
mm:0	manual mode (bool)
rbt:0	reboot (bool) 

from options:
htp:8080 http port the program will run on (o12)
seq:1	sequential/concurrent operation (o16)
sdt:0	station delay time(o17)
mton:0	master on delay (o19)
mtoff:0	master off delay (020)
nbrd:1	number of boards (o15)
tz:16	time zone (o1)
urs:0	use rain sensor (o21 - not used)
rst:1	Rain sensor type (normaly open =1, dafault, or closed, o22 - not used)
wl:100	water level (percent, o23)
mas:0	master station index (o18)
ipas:1	ignore passwprd (bool, o25)
pwd:"b3BlbmRvb3I=" encoded password (default shown here)
loc:""	location (for weather - not used)
rdst:0	rain delay stop time (unix time stamp)
rs:0	rain sensed (o22)
nopts:13 Number of optiions to be displayed

for scheduling:
bsy:0	program buisy
mnp:32	maximum number of programs
nprogs:0 number of programs (can be calculated form length of prog array)
mo:[0] master operation bytes - contains bits per board for stations with master set
ir:[0] ignore rain bytes - contains bits per board for stations to ignore rain delay and rain sensor
rsn:0 Reset all stations
nst:8 number of stations

for logging:
lg:0 log runs if = "checked"
lr:100 limit number of log records to keep, 0 = no limit