deal with a completely commented out (empty) configuration file
deal with a completely commented out (empty) configuration file

Loading an empty (fully commented) YAML file returns `false`. We assume default
settings in that case.

Signed-off-by: Anurag Priyam <6e6ab5ea9cb59fe7c35d2a1fc74443577eb60635@gmail.com>

jasminZ/sequenceserver,elsiklab/sequenceserver,jasminZ/sequenceserver,vivekiitkgp/sequenceserver,jasminZ/sequenceserver,lepbase/lepbase-sequenceserver,deepakunni3/sequenceserver,yeban/sequenceserver,aldermossy/sequenceserver,elsiklab/sequenceserver,aldermossy/sequenceserver,IsmailM/sequenceserver,elsiklab/sequenceserver,vivekiitkgp/sequenceserver,deepakunni3/sequenceserver,vivekiitkgp/sequenceserver,deepakunni3/sequenceserver,aldermossy/sequenceserver,yeban/sequenceserver,yeban/sequenceserver,aldermossy/sequenceserver,IsmailM/sequenceserver,lepbase/lepbase-sequenceserver,IsmailM/sequenceserver,yeban/sequenceserver,lepbase/lepbase-sequenceserver