CR-07 - more parameters in project summary

Add the following parameters to menu item (in addition to the existing
ones):

Generate Project Data Summary in CSV Format for a Given Set of Products
(it will now accept product-names.csv and a folders containing DCN files
for all the products and output ONE csv file where each row is a product
and the columns are the existing parameters plus the ones below).

No of developers owning bugs
Centralization - degree, betweenness, closeness, evcent Clustering
coefficient - transitivity (global) )
Assortativity
Diameter
Density
Modularity
Average path length
Average degree
Average elapsed time of bugs in hours
Median elapsed time of bugs in hours