ACTIV-57 - Fail view client if permissions denied
ACTIV-57 - Activ permission checking

Add in code to bypass checks in certain situations
Merge branches 'develop' and 'topic/ACTIV-57' of github.com:OpenGamma/OG-Platform into topic/ACTIV-57
ACTIV-57 - Changes for per user entitlements
ACTIV-57 - Changes for per user entitlements

Do not do entitlement check on subscription
ACTIV-57 - Changes for per user entitlements

Add in user mappings and maintenance tool
Merge branch 'develop' of github.com:OpenGamma/OG-Platform into topic/ACTIV-57
ACTIV-57 - Changes for per user entitlements

Periodic permissions check after view cycles
ACTIV-57 - Changes for per user entitlements

Make interval for periodic permissions check configurable
Merge branches 'develop' and 'topic/ACTIV-57' of github.com:OpenGamma/OG-Platform into topic/ACTIV-57
ACTIV-57 - Changes for per user entitlements

Adjustments following feedback from Activ