Enable overloading of task triggerring source cell editor (SINGLE) in resource editor. PLCGenerator now generates MULTI keywork instead of SINGLE when task's activation is surroundes with square brackets
<xsd:attribute name="Command" type="xsd:string" use="optional" default="make -C %(buildpath)s all BEREMIZSRC=%(src)s BEREMIZCFLAGS=%(cflags)s MD5=%(md5)s USE_BEREMIZ=1 FROM_BEREMIZ=1"/>