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
extracted repository calls to methods
created github service
added github service to controller dependencies
switched method calls to github service
removed old controller methods
cleanup
removed service cachekey method
added github client runtime exception
renamed getRepositoryMetadata
added generators
doctype fix
renamed service to RepositoryRetriever
updated require php to ~5.5
cs fixes
rename method
added test