Initial version of WG admin tools

 - Added routes, controller, views, and templates for working groups,
   volunteers, wg chairs, and wg volunteers CRUD interfaces for use within the
   admin portion of the site.
 - Shortened/Renamed create/update/get/delete_working_group_* to create/update/get/delete_wg_*
 - Added created_by and updated_by columns on working groups, volunteers, working group
   volunteers to record the last person who modified a resource
 - Added the entire priv/plts dir to .gitignore
 - Added is_url?/1 to Erlef.Inputs
 - Added validate_email/2 and validate_url/2 to Erlef.Schema
 - Added Erlef.Context which includes helpers for context modules
 - Added audit/1 in ErlefWeb.controller/0 for extracting the member id
    from a conn in controllers
 - Added convention for requiring functions that mutate the database to
    be given an keyword list consisting of an audit k/v, where the value
    holds a member_id which can in turn be used to populate updated_by and
    created_by columns on a table.
 - Added Erlef.Admins.resource_counts/0 for fetching various resource
   counts from the database for use on the admin dashboard.
 - Shortened/Renamed create/update/get/delete_working_group_* to create/update/get/delete_wg_*
 - Renamed WorkingGroup.proposal and proposal_html to charter and
   charter_html
 - Removed all delete_* related functions in Erlef.Groups
 - Fixed up case form in Erlef.Agenda.get_combined/0
 - Bring in datatables and toast-ui-editor as static resources (assets/static)
 - Remove rogue body tag in admin layout

.gitignore

@@ -42,8 +42,8 @@ npm-debug.log
 .env-local
 
 # Ignore plts
-/priv/plts/erlef.plt
-/priv/plts/erlef.plt.hash
+/priv/plts/
+/priv/plts/
 
 # Ignore editor files
 *.swp

assets/css/admin.scss

@@ -1,3 +1,11 @@
 @import "../node_modules/bootstrap/dist/css/bootstrap.css";
 @import "../node_modules/admin-lte/dist/css/adminlte.css";
 @import "../node_modules/@fortawesome/fontawesome-free/css/all.css";
+
+span.help-block {
+  display: inline-block;
+  margin-top: 0.5em;
+  background-color: #ffc107;
+  border-radius: 0.3em;
+  padding: 0.3em; 
+}

lib/erlef/admins.ex

@@ -9,4 +9,35 @@ defmodule Erlef.Admins do
     |> Notifications.new(params)
     |> Mailer.deliver()
   end
+
+  def resource_counts() do
+    q = """
+    select 
+    (select count(id) from volunteers), 
+    (select count(id) from working_groups), 
+    (select count(id) from sponsors),
+    (select count(id) from events where events.approved = false), 
+    (select count(id) from member_email_requests where member_email_requests.status != 'complete')
+    """
+
+    %{
+      rows: [
+        [
+          volunteer_count,
+          working_group_count,
+          sponsors_count,
+          unapproved_events_count,
+          outstanding_email_requests_count
+        ]
+      ]
+    } = Ecto.Adapters.SQL.query!(Erlef.Repo, q)
+
+    %{
+      volunteers_count: volunteer_count,
+      working_groups_count: working_group_count,
+      sponsors_count: sponsors_count,
+      unapproved_events_count: unapproved_events_count,
+      outstanding_email_requests_count: outstanding_email_requests_count
+    }
+  end
 end

lib/erlef/agenda.ex

@@ -22,8 +22,7 @@ defmodule Erlef.Agenda do
 
       [] ->
         case get_calendars() do
-          {:error, _} = err -> err
-          ics -> {:ok, ics}
+          ics when is_binary(ics) -> {:ok, ics}
         end
     end
   end

lib/erlef/context.ex

@@ -0,0 +1,31 @@
+defmodule Erlef.Context do
+  @moduledoc """
+  Context module helpers
+  """
+
+  def audit_attrs(:create, params, audit) do
+    case all_atoms_map?(params) do
+      true ->
+        params
+        |> Map.put(:created_by, audit.member_id)
+        |> Map.put(:updated_by, audit.member_id)
+
+      false ->
+        params
+        |> Map.put("created_by", audit.member_id)
+        |> Map.put("updated_by", audit.member_id)
+    end
+  end
+
+  def audit_attrs(:update, params, audit) do
+    case all_atoms_map?(params) do
+      true ->
+        Map.put(params, :updated_by, audit.member_id)
+
+      false ->
+        Map.put(params, "updated_by", audit.member_id)
+    end
+  end
+
+  def all_atoms_map?(map), do: Enum.all?(Map.keys(map), &is_atom/1)
+end