Debug shortcode setting v2.5.15 unreleased with Stable Tag 2.5.10.

Needs to be shared on the Forum as a follow-up ASAP in several threads.
This is another bug introduced while linting the codebase after 2.5.10.
= 2.5.15 =
- Bugfix: Dashboard: General settings: Footnote start and end short codes: debug select box for shortcodes with pointy brackets.
- Update: Dashboard: General settings: Footnote start and end short codes: add information about pointy brackets.

git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@2503174 b8457f37-d9ea-0310-8a92-e5e31aec5664

class/dashboard/subpage-main.php

@@ -422,6 +422,8 @@ class MCI_Footnotes_Layout_Settings extends MCI_Footnotes_Layout_Engine {
 		// Replace all placeholders.
 		$l_obj_template->replace(
 			array(
+				// Translators: The 2 placeholders are the <ref></ref> and <fn></fn> shortcodes.
+				'description-escapement'   => sprintf( __( 'The problems with shortcodes with pointy brackets have been solved. We apologize for the longlasting bugs making the %s and %s shortcodes close to unusable.', 'footnotes' ), '<ref></ref>', '<fn></fn>' ),
 
 				'label-short-code-start'   => $this->add_label( MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START, __( 'Footnote start tag short code:', 'footnotes' ) ),
 				'short-code-start'         => $this->add_select_box( MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START, $l_arr_shortcode_start ),