Resolve problem with version of liip imagine bundle 

This commit resolves problem with dependencies for admin-gallery-bundle
problem is caused by different versions of liip-imagine-bundle in admin-gallery and admin-gallery-bundle.
[code]
Problem 1
    - Installation request for fsi/admin-gallery-bundle 1.0.*@dev -> satisfiable by fsi/admin-gallery-bundle[1.0.x-dev].
    - fsi/admin-gallery-bundle 1.0.x-dev requires liip/imagine-bundle dev-master -> no matching package found.
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