Deduplicate CDR tables

[douweschulte]

It is very common for the CDR tables to contain multiple copies of the same sequence. It would be nice to deduplicate them. For now the approach would be to group by template, by sequence. So this:

Template	Sequence	Read
IGHV3-11	S.....	R001
IGHV3-11	S.....	R002
IGHV3-11	TAS...	R003
IGHV3-23	S.....	R001

Would become:

Template	Sequence	Reads
IGHV3-11	S.....	R001,R002
IGHV3-11	TAS...	R003
IGHV3-23	S.....	R001

[douweschulte]

Another thought: the table could be turned around, focussed on the read instead of the template. If it is then deduplicated it can be easier to spot the diversity of reads which is the thing users want to see here.