Merge pull request #8 from mlevvy/master

Fix database connection
Merge pull request #9 from mlevvy/master

Use strings as keys
Merge pull request #10 from mlevvy/master

Fix wrong collection name
Add empty emails list
Add email ID and date
Merge pull request #11 from mlevvy/doNotCrash

Add empty emails list
Merge pull request #12 from mlevvy/addMailIDAndDate

Add email ID and date
Should deny adding user to workshop if user is not confirmed
Accept incoming emails
Fixes after review
Don't add user to workshop more than once
Merge pull request #13 from tomekp/master

Bugfix & receiving emails
Merge branch 'staging'