Must support subcontext
If we use "Production/Staging" context per ex. we have a subdirectory in the configuration directory, and this directory break the SymlinkConfigurationTask because we use "rm -f Production/*", but should be "rm -Rf Production/*"
Patch is coming
[BUGFIX] Sub-contexts are not supported
If using e.g. "Production/Staging" as context a subdirectory in the
configuration directory exists. This directory is now correctly
removed using "rm -Rf Production/*" instead of "rm -f Production/*".
The SymlinkConfigurationTask thus no longer breaks.