Flatten GUI tree somewhat

The very deep tree structure didn't really aggree with me, sorry. This
makes the core module rather large, but on the other hand that just
highlights that it is rather large.

gui/syncthing/folder/editIgnoresModalView.html

@@ -0,0 +1,28 @@
+<div id="editIgnores" class="modal fade" tabindex="-1">
+	<div class="modal-dialog modal-lg">
+	  <div class="modal-content">
+	    <div class="modal-header">
+	      <h4 class="modal-title" translate>Ignore Patterns</h4>
+	    </div>
+	    <div class="modal-body">
+	      <p translate>Enter ignore patterns, one per line.</p>
+	      <textarea class="form-control" rows="15"></textarea>
+
+	      <hr/>
+
+	      <p class="small"><span translate>Quick guide to supported patterns</span> (<a href="http://docs.syncthing.net/users/ignoring.html" target="_blank" translate>full documentation</a>):</p>
+	      <dl class="dl-horizontal dl-narrow small">
+	        <dt><code>!</code></dt> <dd><span translate>Inversion of the given condition (i.e. do not exclude)</span></dd>
+	        <dt><code>*</code></dt> <dd><span translate>Single level wildcard (matches within a directory only)</span></dd>
+	        <dt><code>**</code></dt> <dd><span translate>Multi level wildcard (matches multiple directory levels)</span></dd>
+	        <dt><code>//</code></dt> <dd><span translate>Comment, when used at the start of a line</span></dd>
+	      </dl>
+	    </div>
+	    <div class="modal-footer">
+	      <div class="pull-left"><span translate>Editing</span> <code>{{currentFolder.path}}{{system.pathSeparator}}.stignore</code></div>
+	      <button type="button" class="btn btn-primary btn-sm" data-dismiss="modal" ng-click="saveIgnores()"><span class="glyphicon glyphicon-ok"></span>&nbsp;<span translate>Save</span></button>
+	      <button type="button" class="btn btn-default btn-sm" data-dismiss="modal"><span class="glyphicon glyphicon-remove"></span>&nbsp;<span translate>Close</span></button>
+	    </div>
+	  </div>
+	</div>
+</div>