Initial commit of code after the 2012-13 results
Update .gitignore and added frontend files
Added better comments and exclusion rules
Create README.md
Comment expanded as test.
Added correlation minimum N and correlation studies.

...also now allowing frontends to receive impact data in terms of number
of schools OR number of students enrolled at those schools
Included database persist and restore capability.  This
Merge pull request #1 from johnmannpaul/master

Included database persist and restore capability.
Minor alterations so that we are able to run out of the box
Merge pull request #2 from johnmannpaul/2013-14-Data-Model

2013 14 data model
tidied up db connectivity
Merge pull request #3 from johnmannpaul/master

Need to sync db connectivity changes
Loading db nulls as empty strings and final tweaks

...assuring the model runs produced from R objects loaded from db match
the runs from the prototypical R objects, which were  used to populate
those tables in the first place.
Merge pull request #4 from johnmannpaul/2013-14-Data-Model

Merge pull request #3 from johnmannpaul/master
Merge pull request #5 from johnmannpaul/master

Syncing with master
Merge pull request #6 from johnmannpaul/master

Making sure we can create arbitrarily located data directory
Adding reporting SQL DDL and population scripts
Merge pull request #7 from johnmannpaul/master

Adding reporting SQL DDL and population scripts
Merge pull request #8 from johnmannpaul/master

cleanup
adding z-score calculation for high school achievement