Added significance column for the linear regression model coefficients and refactored to get all the coefficients and their p-values. Currently not storing it yet in the database.
now storing whether the metric coefficients for the linear regression model are significant or not. additionally, minor schema updates to the glm coefficient table.
Merge pull request #6 from CommitAnalyzingService/linear-regression-model

Store for the linear regression coefficient metrics if they are significant or not.