Make tim accessible under /api

This solution is not ideal because resources from engine are enumerated
but it's best I found out.
fixes #267
Re-enabled images path under /api

This path was disabled in commit 684b3c392715c21e1aad800f6851b422a11c1e36
because tim wasn't accessible under /api yet.
Removed aeolus-image dependency

This gem should not be needed anymore after switching to Tim.
Removed some ancient json files which are not used anymore
Merge pull request #342 from jprovaznik/tim-api2

Make time accessible under /api
Merge pull request #355 from jprovaznik/aeolus_image

Aeolus image