Started returing period to SQL and creating a metaSQL for periods.
Removed unused SQL queries.
Merge branch 'newperiod' into newperiodSQL

Conflicts:
	vizGrimoireJS/mls-analysis.R
	vizGrimoireJS/scm-analysis.R
Ready to start working in R for normalizing time series
New version to play with completePeriod
Only select DATE from MySQL. Improve vector management in R.
Implemented DST (Daily Saving Time)!
Use different functions to fill days or weeks time series
So close to have yyyy-ww in MySQL and R using the same standard.
Time series for weeks build ok from R. Time to merge with SQL one
Finishing SQL week grouping
Copleted weeks support!
Complete months time series completion in R
Completed year support also in R time series. All support completed!
Migrated all global evol queries to new metaquery schema with SQL group.
The code is a lot shorter and more understable and maintainable
Added companies support also for MLS evol global
Full queries reworked for evo and static SCM. Much cleaner!!!
Fix some issues with time zones
DST working in all cases (I hope so!)
Working SQL queries for repositories analysis
Copleted queries for countries. Just pending companies.