dbupdater: add mysql transaction warning

classes/handler/public.php

@@ -1174,14 +1174,15 @@ class Handler_Public extends Handler {
 				} else {
 					if ($updater->isUpdateRequired()) {
 
-						print "<h2>" . __("Database update required") . "</h2>";
+						print "<h2>".T_sprintf("Tiny Tiny RSS database needs update to the latest version (%d to %d).",
+							$updater->getSchemaVersion(), SCHEMA_VERSION)."</h2>";
 
-						print_notice("<h4>".
+						if (DB_TYPE != "mysql") {
-						sprintf("Your Tiny Tiny RSS database needs update to the latest version: %d to %d.",
+							print_error("<strong>READ THIS:</strong> Due to MySQL limitations, your database is not completely protected while updating. ".
-							$updater->getSchemaVersion(), SCHEMA_VERSION).
+								"Errors may put it in an inconsistent state requiring manual rollback. <strong>BACKUP YOUR DATABASE BEFORE CONTINUING.</strong>");
-						"</h4>");
+						} else {
-
+							print_warning("Please backup your database before proceeding.");
-						print_warning("Please backup your database before proceeding.");
+						}
 
 						print "<form method='POST'>
 							<input type='hidden' name='subop' value='performupdate'>

css/default.css

@@ -960,6 +960,10 @@ body.ttrss_main .text-success,
 body.ttrss_utility .text-success {
   color: #468847;
 }
+body.ttrss_main .text-warning,
+body.ttrss_utility .text-warning {
+  color: #a47e3c;
+}
 body.ttrss_main .alert,
 body.ttrss_utility .alert,
 body.ttrss_main .alert h4,

css/tt-rss.less

@@ -1141,6 +1141,10 @@ body.ttrss_main, body.ttrss_utility {
 		color: #468847;
 	}
 
+	.text-warning {
+		color: darken(#c09853, 10%);
+	}
+
 	.alert,
 	.alert h4 {
 		color: #c09853;

themes/night.css

@@ -961,6 +961,10 @@ body.ttrss_main .text-success,
 body.ttrss_utility .text-success {
   color: #468847;
 }
+body.ttrss_main .text-warning,
+body.ttrss_utility .text-warning {
+  color: #a47e3c;
+}
 body.ttrss_main .alert,
 body.ttrss_utility .alert,
 body.ttrss_main .alert h4,

themes/night_blue.css

@@ -961,6 +961,10 @@ body.ttrss_main .text-success,
 body.ttrss_utility .text-success {
   color: #468847;
 }
+body.ttrss_main .text-warning,
+body.ttrss_utility .text-warning {
+  color: #a47e3c;
+}
 body.ttrss_main .alert,
 body.ttrss_utility .alert,
 body.ttrss_main .alert h4,