Fix: Remove unused exceptions
Merge pull request #290 from localheinz/fix/unused-exceptions

Fix: Remove unused exceptions
Enhancement: Use container-based infrastructure

See http://docs.travis-ci.com/user/workers/container-based-infrastructure/
Merge pull request #291 from localheinz/feature/container-based-infrastructure

Enhancement: Use container-based infrastructure
removed vendor LfjErrorLayout from composer
changed default display exceptions to false
updated error templates
added display_not_found_reason to dev config
Merge pull request #292 from ins0/fix/error-view

Fix/error on error view