socr.dataStore implemented with basic functionality.
test cases for socr.dataStore added.
socr.dataStore integrated with appModel. Mean,count,fvalue and pvalue saved in the dataStore.
migrated dataset and random sample to the new dataStore. This completes the dataStore feature. Test cases yet to be completed.
moved mean() to utils.js
Fixes #25
controller view changed. socr.analysis namespace created.
Fixes #28
Merge branch 'v0.2.0'