version-67

Merge pull request #193 from donno2048/patch-1

Update MathJax version

version-66: Merge pull request #170 from sympy/dockerize

Dockerize the project for easy development and testing

version-65: Merge pull request #166 from sympy/refactor-handler-ndb

Refactor shell into handlers and ndb modules

version-64: Merge pull request #165 from sympy/refactor-models

Refactor models into its own module

version-63: Merge pull request #163 from sympy/status-endpoint

Add status endpoint to check if app is running

version-62

Merge pull request #147 from prshnt19/Migrate-to-Cloud-NDB-to-prepare…

version-61: Merge pull request #152 from sympy/dynamic-copyright

Make copyright year dynamic

version-60: Merge pull request #149 from sympy/travis

Setup continuous Integration and deployment via Travis