FIX: grammar quirks and typo
add new optional parameter to cvmfs_server add-replica
use $alias_name in the add-replica subcall of cvmfs_server
replace error message with solution suggestion
resolve stratum1 alias names in cvmfs_server list
adapt cvmfs_server snapshot to work with aliased replicas
cosmetics in error messages
adapt test 515 for new snapshot functionality
adapt test 516 for new snapshot functionality
FIX: test 516 desaster cleanup routine
Merge pull request #225 from reneme/named_replica

Named Stratum1 Replicas

This introduces Stratum1 replicas with an (optional) name different from the fully qualified repository name.
Using this new feature, we can have more than one Stratum1 repository for each Stratum0 repository on a single host. Additionally it is now possible to have Stratum1 replicas on the same host as the associated Stratum0 repository.

Note: Since this feature is extremely handy for testing the replication functionality, this Pull Request also adapts the Stratum1 integration tests.