Allow configuring memcache via Configuration
use permitted params for board
make those tests pass :)
add changelog entry
Merge pull request #847 from opf/fix/use_permitted_params_for_board

Fix/use permitted params for board
document the default value for the cache store
new version; updated changelog
Fixed precompile error in jstoolbar css
Cache configuration: Add namespace option

Also make clear that expires_in is not memcache-specific.
changelog entry
Merge pull request #915 from opf/feature/memcache_config_via_env_var

Allow configuring memcache via Configuration