userportal, webadmin: configure mod_deflate apache

- Configured mod_deflate on install. The module was
installed, however nothing configured to use it.
This will enable compression for a lot of the text mime
types.

Change-Id: Ic10dd91a91158c36bc4807a07a87510c9688c8f0
Signed-off-by: Alexander Wels <awels@redhat.com>