Multiqc tweaking

[daler]

This PR overhauls the MultiQC config for both RNA-seq and ChIP-seq:

• general stats table is now much less confusing, as rows for different stages (raw, cutadapt, bam) are effectively merged into columns
• running fastqc module separate times (raw, trimmed, aligned) gives different sections and also gives the corresponding columns in the general stats table
• ordering of modules reflects the workflow
• general stats columns are organized so that the different stages of fastqc can be directly compared to each other
• better column names and better ordering for the libsizes table
• plotFingergprint logs will now make it into the multiqc report