Only show gray footer space if environment actions exist

Annabel Dunstone Grayrequested to merge
33853-environments-buttons into master
Before After
Screen_Shot_2017-06-20_at_11.37.33_AM Screen_Shot_2017-06-20_at_11.36.24_AM

Closes #33853 (closed)

Edited by Annabel Dunstone Gray

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