various fixes:

line-heights
ability to edit filters
fix tag parameter decoding again
better error_tag message

assets/css/common/base.scss

@@ -27,13 +27,14 @@ body {
   font-size: 13px;
   margin: 0;
   padding: 0;
-  line-height: 15px;
+  line-height: 1.15em;
 }
 
 h1, h2, h3, h4, h5 {
   font-weight: normal;
   text-rendering: optimizeLegibility;
   margin-bottom: 0.62em;
+  line-height: 1.15em;
 }
 
 h1 { font-size: 24px; }

lib/philomena/users/ability.ex

@@ -115,7 +115,8 @@ defimpl Canada.Can, for: [Atom, Philomena.Users.User] do
 
   # View filters they own and system filters
   def can?(_user, :show, %Filter{system: true}), do: true
-  def can?(%User{id: id}, :show, %Filter{user_id: id}), do: true
+  def can?(%User{}, action, Filter) when action in [:index, :new, :create], do: true
+  def can?(%User{id: id}, action, %Filter{user_id: id}) when action in [:show, :edit, :update], do: true
 
   # Edit filters they own
   def can?(%User{id: id}, action, %Filter{user_id: id}) when action in [:edit, :update], do: true

lib/philomena_web/image_reverse.ex

@@ -29,6 +29,7 @@ defmodule PhilomenaWeb.ImageReverse do
     {:ok, analysis} = Analyzers.analyze(path)
     {analysis, path}
   end
+  defp analyze(_upload), do: :error
 
   defp intensities(:error), do: :error
   defp intensities({analysis, path}) do

lib/philomena_web/plugs/recode_parameter_plug.ex

@@ -9,6 +9,7 @@ defmodule PhilomenaWeb.RecodeParameterPlug do
       |> to_string()
       |> URI.encode_www_form()
       |> String.replace("%2B", "+")
+      |> String.replace("%25", "%")
 
     params = Map.put(conn.params, name, fixed_value)
 

lib/philomena_web/templates/avatar/edit.html.slime

@@ -40,3 +40,6 @@
 
       br
       = button_to "Remove my avatar", Routes.avatar_path(@conn, :delete), method: "delete", class: "button", data: [confirm: "Are you really, really sure?"]
+
+    br
+    = link "Back", to: Routes.pow_registration_path(@conn, :edit)

lib/philomena_web/views/error_helpers.ex

@@ -10,7 +10,7 @@ defmodule PhilomenaWeb.ErrorHelpers do
   """
   def error_tag(form, field) do
     Enum.map(Keyword.get_values(form.errors, field), fn error ->
-      content_tag(:span, translate_error(error), class: "help-block")
+      content_tag(:span, humanize_name(field) <> translate_error(error), class: "help-block")
     end)
   end
 
@@ -41,4 +41,12 @@ defmodule PhilomenaWeb.ErrorHelpers do
       Gettext.dgettext(PhilomenaWeb.Gettext, "errors", msg, opts)
     end
   end
+
+  defp humanize_name(field) do
+    field
+    |> to_string()
+    |> String.replace("_", " ")
+    |> String.capitalize()
+    |> Kernel.<>(" ")
+  end
 end