add spoiler tag + fix attendance additional rewards

public/styles/sprites.css

@@ -480,3 +480,18 @@ img.hitandrun {
     background: url(icons.gif) no-repeat -100px -171px;
     margin-left: 0.5em;
 }
+.spoiler-title {
+    line-height: 40px;
+    color: #4d6c99;
+    cursor: pointer;
+    font-weight: 700;
+    background-color: rgba(77, 108, 153, 0.1);
+    display: inline-block;
+    padding: 0 10px;
+}
+.spoiler-content {
+    display: inline-block;
+    height: 0;
+    overflow: hidden;
+    transition: height 0.3s ease;
+}

public/tags.php

@@ -252,6 +252,15 @@ insert_tag(
 	$lang_tags['text_ninety_eight_image_remarks']
 );*/
 
+
+insert_tag(
+    $lang_tags['text_spoiler'],
+    $lang_tags['text_spoiler_description'],
+    $lang_tags['text_spoiler_syntax'],
+    $lang_tags['text_spoiler_example'],
+    ""
+);
+
 end_frame();
 end_main_frame();
 stdfoot();