Improve coala Website and Supporting Tools

Currently, the coala Online module lacks support for all the bears. Bears with non-optional settings are ignored. The first goal of this project is to have a powerful online module that provides backend and frontend interface to be able to do code analysis with any given bear. The project focusses on enhancing coala-html by introducing results and bear search and filtering on basis of parameters. The next thing where the project will help us is that it will provide an effective bear search mechanism on coala.io and make projects.coala.io configurable and extensible.