Pre-version of modular plots
WORK IN PROGRESS:
rowspan, colspan NOT WORKING
included text NOT SUPPORTED
Handle texts now
Full support of modular plots
pylint cleaning
Rework data structures
Merge branch 'modular_plots'

* modular_plots:
  Rework data structures
  pylint cleaning
  Full support of modular plots
  Handle texts now
  Pre-version of modular plots WORK IN PROGRESS: rowspan, colspan NOT WORKING included text NOT SUPPORTED