Deleting VleRep list of VleVersion admin page

and Minor modification (updating ubuntu version)

erecord/erecord/apps/erecord_db/admin.py

@@ -27,14 +27,14 @@ vleversion_general_description = \
 vleversion_identification_description = \
     "A models repository attached to the vle version should be consistent with it."
 
-class VleRepInline(admin.TabularInline):
-    model = VleRep
+#no# class VleRepInline(admin.TabularInline):
+#no#     model = VleRep
 
 class VleVersionAdmin(admin.ModelAdmin):
     form = VleVersionForm
     list_display = ('id', 'name', 'verbose_name', 'text',)
     #actions = [generate_tree, update_tree, delete_tree] could be added
-    inlines = [VleRepInline]
+    #no# inlines = [VleRepInline]
     search_fields = ['name']
 
     fieldsets = (

erecord/erecord/install/dev/install.txt

@@ -3,7 +3,7 @@
 
         Case of development under ubuntu with django development server
 
-           Versions : ubuntu 17.10
+           Versions : ubuntu 18.04 LTS
 
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