fix issue #13 again
Revert "Fix for https://github.com/diefenbach/lfs-theme/issues/13 - image objects are stored to cache but image urls only"

This reverts commit 79c4adf20a98aa8d7cdcc8fac076b8b5a91fc138.
Merge remote-tracking branch 'upstream/version/0.7' into version/0.7