Fix SLURM grid engine #173

Job	Run time
🚧 Build SPAdes	1m 36s
Nextera L.monocytogenes	1m 14s
Full run M.ruber JGI lane 9	5m 36s
Multicell B.cereus TruSeq 100x	4m 47s
IonTorrent E.coli K12	28m 57s
Mate-pairs B.faecium	2m 24s
plasmidSPAdes C.callunae	7m 0s
Single reads E.coli Deeptrench	1m 51s
Contigs E.coli JGI lane 7	4m 16s
Single-cell P.heparinus JGI lane 7	2m 51s
PacBio M.ruber	3m 53s
Saves E.coli 100K	48s
metaSPAdes JGI 150	15m 22s
Saves E.coli UCSD lane 1	9m 2s
metaviralSPAdes ERR525599	14m 35s
	1h 44m 12s

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