as I was searching already several times for this information, I put it now here 

QLA available since 2012/12/12, publicly available since 2013/09/01 and official alerts since 2014/03/18

|| # ||Date, Time || Source || additional info ||
|| || || || ||
|| 1 || 10.6.2014 0:57 || Mrk501 || 3-4 CU, for night of 8./9.6.2014 ||
|| 2 || 19.6.2014 3:32 || Mrk501 || ~ 3 CU ||
|| 3 || 21.6.2014 2:46 || Mrk501 || 3-4 CU, only 1 bin above limit ||
|| 4 || 24.6.2014 2:17 || Mrk501 || > 5 CU, triggered HESS Atel #6268 ||
|| 5 || 28.7.2014 0:28 || Mrk501 || > 5 CU, missed other alerts around this date || 
|| 6 || 22.8.2014 1:12 || Mrk501 || ~ 3 CU ||
|| 7 || 4.12.2014 1:29 || Mrk421 || 3-4 CU, for the night of 2./3.12.2014 ||
|| 8 || 19.10.2015 2:13 || 1ES 1959+650 || 1-2 CU for 20-30 min ||
|| 9 || 4.11.2015 22:13 || 1ES 1959+650 || 1 CU for 10-20 min ||
|| 10 || 15.11.2015 21:46 || 1ES 1959+650 || 1 CU for 10-20 min ||
|| 11 || 17.12.2015 6:29 || Mrk421 || 3 CU for 20 min, 2 CU for > 1.5h, not ideal weather ||
|| 12 || 29.4.2016 11:03 || 1ES 1959+650 || confirmation of bright emission, indication for flux increasing with time -> Atel #9010 with Fermi-LAT, MAGIC and VERITAS ||
|| 13 || 30.4.2016 7:56 || 1ES 1959+650 || update, similar flux to last night ||
|| 14 || 17.5.2016 6:21 || 1ES 1959+650 || 0.5-1 CU, referred to in Atel #9070 || 
|| 15 || 6.6.2016 9:46 || 1ES 1959+650 || > 1CU, referred to in Atel #9121 ||