Fix: login auth type mail options

[galviset]

Fixed #5, mails not being sent if there is SMTP authentification in the backend configuration.

[alexskr]

Thanks for the PR, I assume it works in your environment.

This PR is based on lirmm's fork of ontologies_linked_data which includes refactored notification so unit tests would not pass until ncbo#148 gets merged

Our options are:

1. Merge ncbo#148
2. disable unit test until PR is merged
3. change 'LinkedData::Utils::Notifier' to 'LinkedData::Utils::Notifications'

I lean towards the second option. @mdorf, what is your preference?

[syphax-bouazzouni]

hi @galviset, I think the easiest solution here, would to be remove the test in this PR.
in the case of NCBO (@mdorf , @alexskr ), I updated directly ncbo#148 to include this fix.

[alexskr]

@syphax-bouazzouni thanks for updating refactored notifications PR in the NCBO fork. We plan on merging it in the near future so this PR would be redundant.