For example, when notify.telegram.token and telegram.token
are both set but to different values, user might see
"access denied" error in log on attempt to send telegram
notification, thinking that notify.telegram.token value
is used, when in fact it is ignored and only telegram.token
is used.
New behavior is the same, ignoring the old param when new
one is set, but issuing the error log message which
explicitly tells the user about that.
Resolves#1218.
Dmitry Verkhoturov
8689b11e7c