Report charset for text & CSV views

I noticed in the branch comparison plain text view ("Plain text" button
in the Tools -> Branch Comparison page) that in current versions of
Firefox the ellipses were coming through corrupted, though they looked
fine in the HTML version, and it turns out this is because I wasn't
specifying a character set encoding. It should be UTF-8, so add a
charset to the content type stating as such for this and other similar
views.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.microsoft.com>

layerindex/urls.py

@@ -157,7 +157,7 @@ urlpatterns = [
         ClassicRecipeSearchView.as_view(
             template_name='layerindex/classicrecipes_csv.txt',
             paginate_by=0,
-            content_type='text/csv'),
+            content_type='text/csv; charset=utf-8'),
         name='comparison_recipe_search_csv'),
     url(r'^comparison/stats/(?P<branch>[-.\w]+)/$',
         ClassicRecipeStatsView.as_view(
@@ -194,7 +194,7 @@ urlpatterns = [
         name='branch_comparison'),
     url(r'^branch_comparison_plain/$',
         BranchCompareView.as_view(
-            content_type='text/plain',
+            content_type='text/plain; charset=utf-8',
             template_name='layerindex/branchcompare_plain.txt'),
         name='branch_comparison_plain'),
     url(r'^recipe_deps/$',

layerindex/views.py

@@ -1493,7 +1493,7 @@ def layer_export_recipes_csv_view(request, branch, slug):
     if not layerbranch:
         raise Http404
 
-    response = HttpResponse(content_type='text/csv')
+    response = HttpResponse(content_type='text/csv; charset=utf-8')
     response['Content-Disposition'] = 'attachment; filename="recipes_%s_%s.csv"' % (layer.name, layerbranch.branch.name)
 
     fieldlist = request.GET.get('fields', 'pn,pv,license').split(',')

rrs/views.py

@@ -607,7 +607,7 @@ def recipes_report(request, maintplan_name, release_name, milestone_name):
 
     recipe_list = _get_recipe_list(milestone)
 
-    response = HttpResponse(content_type='text/csv')
+    response = HttpResponse(content_type='text/csv; charset=utf-8')
     response['Content-Disposition'] = 'attachment; filename="%s_%s.csv"' % (
            release_name , milestone_name)