Add metrika middleware
Merge pull request #63 from bem/BEMINFO-665

Add metrika middleware
Remove unused data modules
Remove unused file bin/data.js
Add database folder to the list of git ignored files
Simplify application configuration file and remove unused properties
Change aliases and modify list of dependencies in package.json file
Remove unused modules
add levelup and leveldown dependencies to package.json file
Temporary disable cron update for data
Add blocks for work with database
Rewrite and refactor server blocks for work with database
Fix issue with page title creation. Remove unused logging. Add stubs for retrieve data for authors and tags pages
Fix issue with missed links to authors
Implement retrieve data for authors and tags pages. Remove unused jscs configuration file
Import new jshint and jscs configs for check code
Fix multiple codestyle issues. Implement saving of example files contents into database
Add db multiply for work on cluster
Implement data loading and update from remote data provider
Add advanced logging for updater module