Merge pull request #20 from datarockets/front

Admin dashboard style and bugs fix
Add cache to home
Fix schema.rb
Add tags for projects
Setup mailer in production
Improve test for the mailers view
Setup test coverage gem
Add instructions to Readme
Merge pull request #23 from MaximAbramchuck/setup_test_coverage_reports

Setup test coverage reports
Improve tag form
Fix N+1 queries
Improve rendering
Some improvements
Fix some troubles
Fix code style troubles
Improve rendering
Add tests for checking preview image building
Fixed method name
Remove old hash syntax
Merge pull request #22 from MaximAbramchuck/setup_mailer

Setup mailer in production