Prevent troggle adding the menu if there is one in the file

Add a Docker compose file to bring up a dev troggle easily
Various PEP improvments

core/admin.py

@@ -18,41 +18,50 @@ class TroggleModelAdmin(admin.ModelAdmin):
     class Media:
         js = ('jquery/jquery.min.js','js/QM_helper.js')
 
+
 class RoleInline(admin.TabularInline):
     model = SurvexPersonRole
     extra = 4
 
+
 class SurvexBlockAdmin(TroggleModelAdmin):
     inlines = (RoleInline,)
 
+
 class ScannedImageInline(admin.TabularInline):
     model = ScannedImage
     extra = 4
 
+
 class OtherCaveInline(admin.TabularInline):
     model = OtherCaveName
     extra = 1
 
+
 class SurveyAdmin(TroggleModelAdmin):
     inlines = (ScannedImageInline,)
     search_fields = ('expedition__year','wallet_number')    
 
+
 class QMsFoundInline(admin.TabularInline):
     model=QM
     fk_name='found_by'
     fields=('number','grade','location_description','comment')#need to add foreignkey to cave part
     extra=1
     
+
 class PhotoInline(admin.TabularInline):
     model = DPhoto
     exclude = ['is_mugshot' ]
     extra = 1
 
+
 class PersonTripInline(admin.TabularInline):
     model = PersonTrip
     raw_id_fields = ('personexpedition',)
     extra = 1
 
+
 #class LogbookEntryAdmin(VersionAdmin):
 class LogbookEntryAdmin(TroggleModelAdmin):
     prepopulated_fields = {'slug':("title",)} 
@@ -72,17 +81,18 @@ class LogbookEntryAdmin(TroggleModelAdmin):
     def export_logbook_entries_as_txt(modeladmin, request, queryset):
         response=downloadLogbook(request=request, queryset=queryset, extension='txt')
         return response
-    
-    
+
 
 class PersonExpeditionInline(admin.TabularInline):
     model = PersonExpedition
     extra = 1
 
+
 class PersonAdmin(TroggleModelAdmin):
     search_fields = ('first_name','last_name')
     inlines = (PersonExpeditionInline,)
 
+
 class QMAdmin(TroggleModelAdmin):
     search_fields = ('found_by__cave__kataster_number','number','found_by__date')
     list_display = ('__unicode__','grade','found_by','ticked_off_by')
@@ -91,17 +101,21 @@ class QMAdmin(TroggleModelAdmin):
     list_per_page = 20
     raw_id_fields=('found_by','ticked_off_by')
 
+
 class PersonExpeditionAdmin(TroggleModelAdmin):
     search_fields = ('person__first_name','expedition__year')
 
+
 class CaveAdmin(TroggleModelAdmin):
     search_fields = ('official_name','kataster_number','unofficial_number')
     inlines = (OtherCaveInline,)
     extra = 4
 
+
 class EntranceAdmin(TroggleModelAdmin):
     search_fields = ('caveandentrance__cave__kataster_number',)
 
+
 admin.site.register(DPhoto)
 admin.site.register(Cave, CaveAdmin)
 admin.site.register(Area)
@@ -125,17 +139,20 @@ admin.site.register(SurvexStation)
 admin.site.register(SurvexScansFolder)
 admin.site.register(SurvexScanSingle)
 
+
 def export_as_json(modeladmin, request, queryset):
     response = HttpResponse(mimetype="text/json")
     response['Content-Disposition'] = 'attachment; filename=troggle_output.json'
     serializers.serialize("json", queryset, stream=response)
     return response
 
+
 def export_as_xml(modeladmin, request, queryset):
     response = HttpResponse(mimetype="text/xml")
     response['Content-Disposition'] = 'attachment; filename=troggle_output.xml'
     serializers.serialize("xml", queryset, stream=response)
     return response
 
+
 #admin.site.add_action(export_as_xml)
 #admin.site.add_action(export_as_json)