Fixed some display issues

_journal-clubs/bioclues.md

@@ -4,9 +4,9 @@ jcid: bioclues
 title: Bioclues
 host-organisation: Bioclues.org
 host-org-url: http://bioclues.org
-osf: "null"
-zotero: "null"
-website: ""
+osf: 
+zotero:
+website: 
 twitter: bioclues
 signup: [email protected]
 organisers:

_journal-clubs/itu-copenhagen.md

@@ -3,12 +3,12 @@
 jcid: itu-copenhagen
 title: ITU Copenhagen
 host-organisation: IT University of Copenhagen
-host-org-url: ""
+host-org-url: 
 osf: dcekr
 zotero: WR5KZ5EU
-website: ""
-twitter: ""
-signup: ""
+website: 
+twitter: 
+signup: 
 organisers:
   - Jan Vornhagen
 contact: [email protected]

_journal-clubs/munich.md

@@ -4,8 +4,8 @@ jcid: munich
 title: Munich
 host-organisation: Ludwig-Maximilians-Universität Munich
 host-org-url: https://www.uni-muenchen.de
-osf: null"
-zotero: null"
+osf: 
+zotero: 
 website: https://www.osc.uni-muenchen.de/members/reproducibilitea/index.html
 twitter: LMUMunichTea
 signup: [email protected]