Order channel lists in alarm emails.

[alexhutko]

Is the order of the breaching channels time ordered? I not, let's make it alphanumeric.

New channels out of alert:
UW.FORK.--.HHN
UW.FORK.--.HHE

All breaching channels:
UW.LEBA.--.HHN, avg: -6845970.213535067
NN.MCA06.--.HHE, avg: -124304.80751600911
NN.MCA06.--.HHZ, avg: -125286.07470153316
BK.MNDO.00.HHE, avg: 8389712.0
CI.ISA.--.HHE, avg: 418162.5878168463
NN.VCN.--.HHZ, avg: 8980479.0
BK.BARR.00.HHZ, avg: 8389692.0
BK.OAKV.00.HHN, avg: -8336268.244331578
NN.LCH.--.HHZ, avg: 52352.03425740487
BK.QRDG.00.BHZ, avg: -8274749.14466412
BK.BJES.00.HHZ, avg: -8340281.508289738
NN.MCA06.--.HHN, avg: -124855.97780
...