Remove canned messafes from localization constants

src/mibew/install/index.php

@@ -309,10 +309,20 @@ function add_canned_messages($link){
 	}
 	$result = array();
 	foreach (get_available_locales() as $locale) {
-		if (! in_array($locale, $existlocales)) {
+		if (in_array($locale, $existlocales)) {
-			foreach (explode("\n", getlocal('chat.predefined_answers', null, $locale)) as $answer) {
+			// Do not export canned messages for existing locales
-				$result[] = array('locale' => $locale, 'vctitle' => cut_string($answer, 97, '...'), 'vcvalue' => $answer);
+			continue;
 		}
+
+		$file_path = MIBEW_FS_ROOT . '/locales/' . $locale . '/canned_messages.yml';
+		if (!is_readable($file_path)) {
+			// Export canned messages only for locales which have canned messages
+			continue;
+		}
+
+		$canned_messages = get_yml_file_content($file_path);
+		foreach ($canned_messages as $answer) {
+			$result[] = array('locale' => $locale, 'vctitle' => cut_string($answer, 97, '...'), 'vcvalue' => $answer);
 		}
 	}
 	if (count($result) > 0) {

src/mibew/locales/en/canned_messages.yml

@@ -0,0 +1,2 @@
+- 'Hello. How may I help you?'
+- 'Hello! Welcome to our support. How may I help you?'

src/mibew/locales/en/translation.po

@@ -98,8 +98,6 @@ msgid "chat.mailthread.sent.content"
 msgstr "A history of your chat was sent to address {0}"
 msgid "chat.mailthread.sent.title"
 msgstr "Sent"
-msgid "chat.predefined_answers"
-msgstr "Hello. How may I help you?\nHello! Welcome to our support. How may I help you?"
 msgid "chat.redirect.back"
 msgstr "Back..."
 msgid "chat.redirect.cannot"