maxquant_mqpar attempts to read input file in cheetah templating

[mvdbeek]

tools-galaxyp/tools/maxquant/macros.xml

Line 155 in 2cce57c

#set $mqpar_xml = open(str($mqpar_input), "r").read()

causes the entire input file to be loaded into memory inside the job handler process. This patterns also doesn't work when using pulsar or where the head node can't read dataset contents. This breaks execution on usegalaxy.org currently.