force compression of multiqc_data

[thomasmanke]

Can we multiqc --zip-data-dir?

snakepipes/snakePipes/shared/rules/multiQC.snakefile

Line 148 in 7df9bd3

"multiqc -o multiQC -f {params.indirs}"

This would only be a small gain in storage, but it would deal with group permission issue encountered in BRB.
See: maxplanck-ie/BigRedButton#100 (comment)

Not sure if anyone needs multiqc_data uncompressed, but we could make this also optional, and use this option with BRB.