Fix some intend mixed spaces tabs stuff
Do not stop a service when in standby the current time is unknown.

Allow one minute to try to obtain the current time from the currently
tuned service. When this is still not possible we consider that the
specific service could not be tuned. For startup to standby the box will
be put in standby via a notification and then afterwards a service is
started. this patch will also stop this started service after the box is
put in standby after one minute, which also allows the current time is
correctly set.
Check if current date is known by checking year > 1970

It seems that the drivers from VU could put the box before 1970, so
comparing with != 1970 is not a good check if the current date is known,
so I replaced that by > 1970.
It is one services that is stopped, not more services.
Some finetuning regarding the standby and current time available changes
Correctly stop timers in Standby.py

Thanks Dima73
added drawing line with line(x0,y0,x1,y1,color) into CanvasSource

Signed-off-by: Littlesat <littlesat99@yahoo.com>
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2