Updating solum docs
Updating solum docs

Updated the following
- Languagepack commands
- App commands

Change-Id: I627f174a3a03b665ce4fdc4049ad8e37c239ffcb

devdattakulkarni/test-solum,stackforge/solum,openstack/solum,devdattakulkarni/test-solum,stackforge/solum,openstack/solum