1000RNASeq ASE: add summary statistics for vcf filtering and add vcf index as input in variantFiltration

1000RNASeq ASE: change variant filtration results directories and remove var wildcards (only work on SNP)

1000RNASeq ASE: change variant filtration results directories and remove var wildcards (only work on SNP)

1000RNASeq ASE: debug script/call_rate_filter.py and add script/exclude_non_var.py instead of SelectVariant in VariantFiltration.smk

1000RNASEQ chicken ASE: disable bam indexing in splitNCigar to avoid trouble with datetime of output file

1000RNASEQ chicken ASE: change bam index output name, use .bam.bai for phASER and .bai for ASEReadCounter, change phASER output csv file

1000RNASEQ chicken ASE: correct wildcard constraint, rmdup command line and add fasta index  as input in SplitCigar