Refactor how QuaC-Watch analyzes the results of fastqc's "Per Base Sequence Content" module results

[ManavalanG]

Fastqc module "Per Base Sequence Content" for trimmed fastq will always fail as discussed in #29. Solution recommended there is to "check the fastqc results of raw fastq (before trimming) for this particular module". This recommendation needs to be codified in QuaC to make this verification easier.