Upgrade jQuery and jQuery UI to latest versions

- jQuery    from v1.9.1  to v1.11.1
- jQuery UI from v1.10.0 to v1.11.2

Fixes #17932

admin/install.php

@@ -99,7 +99,7 @@ function print_test( $p_test_description, $p_result, $p_hard_fail = true, $p_mes
 html_css_link( 'admin.css' );
 html_content_type();
 html_title( 'Administration - Installation' );
-html_javascript_link( 'jquery-1.9.1.min.js' );
+html_javascript_link( 'jquery-1.11.1.min.js' );
 html_javascript_link( 'install.js' );
 html_head_end();
 ?>

core/html_api.php

@@ -365,7 +365,7 @@ function require_css( $p_stylesheet_path ) {
 function html_css() {
 	global $g_stylesheets_included;
 	html_css_link( config_get( 'css_include_file' ) );
-	html_css_link( 'jquery-ui-1.10.0.custom.min.css' );
+	html_css_link( 'jquery-ui-1.11.2.min.css' );
 	html_css_link( 'common_config.php' );
 	# Add right-to-left css if needed
 	if( lang_get( 'directionality' ) == 'rtl' ) {
@@ -439,8 +439,8 @@ function html_head_javascript() {
 
 	echo "\t" . '<script type="text/javascript" src="' . helper_mantis_url( 'javascript_config.php' ) . '"></script>' . "\n";
 	echo "\t" . '<script type="text/javascript" src="' . helper_mantis_url( 'javascript_translations.php' ) . '"></script>' . "\n";
-	html_javascript_link( 'jquery-1.9.1.min.js' );
-	html_javascript_link( 'jquery-ui-1.10.0.custom.min.js' );
+	html_javascript_link( 'jquery-1.11.1.min.js' );
+	html_javascript_link( 'jquery-ui-1.11.2.min.js' );
 	html_javascript_link( 'common.js' );
 	foreach ( $g_scripts_included as $t_script_path ) {
 		html_javascript_link( $t_script_path );