src/nt_composition/make_nt_correlation.py: Modification of create_all_frequency_figure to make the density figure for all chIA-PET projets

src/nt_composition/make_nt_correlation.py: creation of a script that create density figures to see if regulated exons have the same composition as their co-localized exons

src/nt_composition/get_projects_interaction.py: This script creates a figure that shows the number of co-localisation in chia-pet projects, and select some projects with different number of interaction

src/nt_composition/config.py: Creation of a config file that stores every variable used in submodule ,t_composition

src/nt_composition/__init__.py: Creation of an init file to use the folder nt_composition as a submodule

config_interactions.py: add couple_exon and couple_gene to store the final result of features_interactions.py

__main__.py: update to integrate the filling of cin_exon_interaction and cin_gene_interaction tables

src/db_utils/interactions/features_interactions.py: mojor modifications to speedup teh creation of interaction tables

src/db_utils/interactions/features_interactions.py: Creation of a function create_interaction_table that calls every other function from that file

src/db_utils/interactions/bedtools.py: creation of the required directory if they don't exist at the beginning of function 'main_bedtools'

src/db_utils/projects_metadata/get_fill_metadata.py: modification in launch_pmagicGEO_script function: we call subprocess.check_call instead of subprocess.check_output

src/db_utils/projects_metadata/get_fill_metadata.py: fix fill_projects_table to make it launch launch_pmagicGEO_script + pep8 modifications