move attr_accessor to the top of the class

remove duplicate method

fix MethodMissing error

code style

fix syntax error

Refactor files action of FilesController Introduce service object RepositoryFile which contains the logic of file and directory retrieval on model level. Introduce GitFile which contains logic of file and directory retrieval on git/lib level. Those classes separate the concerns of git/lib and ontohub models way more. Use InheritedResources for FilesController and simplify files action (will be renamed later)

fix empty repository error

adjust tests, fix implementation

Improve routing Only routes for existing files and ontologies are considered.

Add class GitFile It contains logic for file and directory retrieval on git/lib level.