added tls/ssl encryption to server

Note: this will require navigating to https://localhost:8080
rather than localhost:8080
added explicit utf8 declaration
deleted log.html to avoid future conflicts
syntax formatting in app.js
Merge branch 'dev' of https://github.com/IMA-WorldHealth/bhima into dev
fixed all lint errors except exit_service
linting now (lax) requirement for building
Merge pull request #8 from jniles/lint

Make linting a requirement for building