setupbase: Don't try to run bower if components directory exists
setupbase: Don't try to run bower if components directory exists

This prevents bower from running when building the package with conda.

andfoy/spyder-terminal,andfoy/spyder-terminal,spyder-ide/spyder-terminal,spyder-ide/spyder-terminal,andfoy/spyder-terminal,spyder-ide/spyder-terminal,spyder-ide/spyder-terminal