Validation, settings UI cleanup and different settings models, oh my

New: Download client UI matches other settings
Fixed: Prevent drone factory folder from being set to invalid paths/root path for series
Fixed: Switching pages in settings will not hide changes
Fixed: Test download clients
Fixed: Settings are validated before saving

src/UI/Settings/DownloadClient/Options/DownloadClientOptionsView.js

@@ -0,0 +1,26 @@
+'use strict';
+define(
+    [
+        'marionette',
+        'Mixins/AsModelBoundView',
+        'Mixins/AsValidatedView',
+        'Mixins/AutoComplete'
+    ], function (Marionette, AsModelBoundView, AsValidatedView) {
+
+        var view = Marionette.ItemView.extend({
+            template: 'Settings/DownloadClient/Options/DownloadClientOptionsViewTemplate',
+
+            ui: {
+                droneFactory : '.x-path'
+            },
+
+            onShow: function () {
+                this.ui.droneFactory.autoComplete('/directories');
+            }
+        });
+
+        AsModelBoundView.call(view);
+        AsValidatedView.call(view);
+
+        return view;
+    });

src/UI/Settings/DownloadClient/Options/DownloadClientOptionsViewTemplate.html

@@ -0,0 +1,14 @@
+<fieldset">
+    <legend>Options</legend>
+    <div class="control-group">
+        <label class="control-label">Drone Factory</label>
+
+        <div class="controls">
+            <input type="text" name="downloadedEpisodesFolder" class="x-path"/>
+            <span class="help-inline">
+                <i class="icon-nd-form-info" title="The folder where your download client downloads TV shows to (Completed Download Directory)"/>
+                <i class="icon-nd-form-warning" title="Do not use the folder that contains some or all of your sorted and named TV shows - doing so could cause data loss"></i>
+            </span>
+        </div>
+    </div>
+</fieldset>