less : separate each html container with a border
- adjust some javascript in consequences
builder.js : add an html input to tagSelector to change normalization (beta)
- click on a clone star icon to open tagSelector
- input expected value for normalization
- click normalize
- magic happens
graph.js : delete old data about normalisation
graph.js : update way to compute line path with normalization
model.js : store some info about normalization inside model
model.js : new function compute_normalization()
-update getSize family function in consequences
lss / builder.js : use css instead of js to keep some space for visu-separator
model.js : normalization is computed for a specific time_order using a clone size,
so we need to call update_normalization if the time_order change or if the clone_size change
graph.js : debug, line path can be empty if a clone is not present in th displayed time/points
vidjil.cpp: clarify -s/-k relationship in help message
vidjil.cpp: check that there is at most one option -s/-k

It could be nicer with python argparse :)
vidjil.cpp: warning on '-c segment'

Vidjil should not be used to segment reads.
builder.js : auto-drop less agressive
graph.js : add left marge (for next feature) and update resize method
js : change method to compute min_size and precision, the min_size depends of the normalization, so we need to recompute min_size and precision value after each normalization
js : simplify use of time_order
var t was the current position inside the time_order array
now var t is just the current time and time_order is used only to draw graph
graph.js : debug time_order
vidjil.cpp: main output of '-c clones' is in 'out/clones.fa'

This is the main Vidjil output (as a fasta file): representatives of the clones, ready to be processed by other tools.
Until now, this output was on stdout and (partially) in out/seq/*
doc/README: update documentation with clones.vdj.fa + typos
vidjil.cpp: warn if no clones are found, and in this case supress uninteresting output

Side effect: no 'clones.vdj.fa' and 'seq/*' files are produced.
The 'vidjil.data' file is still produced.