Merge branch 'fix_tickets_opening' into 'develop'

Fix tickets opening

See merge request devfest-toulouse/site-devfest-2019!16

content/_index.fr.md

@@ -62,7 +62,7 @@ Le DevFest, ou 'Developers Festival', est une conférence technique destinée au
            ends="2019-04-25"
            price="40 €"
            info="50 premières places"
-           close="true"
+           close="false"
            soldOut=""
            url="https://www.billetweb.fr/devfest-toulouse-2019" >}}</li>
 <li>{{< ticket name="Early Birds"

content/_index.md

@@ -67,7 +67,7 @@ It is aimed at students, professionals or simply curious technophiles.
            ends="2019-04-25"
            price="40 €"
            info="50 first places"
-           close="true"
+           close="false"
            soldOut=""
            url="https://www.billetweb.fr/devfest-toulouse-2019" >}}</li>
 <li>{{< ticket name="Early Birds"