move connection filtering setting from network to connections, provide a link to settings in the navbar if present for a module and some code optimisation

Zotlabs/Module/Settings/Connections.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Zotlabs\Module\Settings;
+
+
+class Connections {
+
+	function post() {
+		check_form_security_token_redirectOnErr('/settings/connections', 'settings_connections');
+	
+		$features = self::get_features();
+
+		process_features_post(local_channel(), $features, $_POST);
+		
+		build_sync_packet();
+		return;
+	}
+
+	function get() {
+		
+		$features = self::get_features();
+
+		$tpl = get_markup_template("settings_module.tpl");
+
+		$o .= replace_macros($tpl, array(
+			'$action_url' => 'settings/connections',
+			'$form_security_token' => get_form_security_token("settings_connections"),
+			'$title' => t('Connections Settings'),
+			'$features'  => process_features_get(local_channel(), $features),
+			'$submit'    => t('Submit')
+		));
+	
+		return $o;
+	}
+
+	function get_features() {
+		$arr = [
+			[
+				'connfilter',
+				t('Connection Filtering'),
+				t('Filter incoming posts from connections based on keywords/content'),
+				false,
+				get_config('feature_lock','connfilter')
+			]
+		];
+
+		return $arr;
+
+	}
+
+}