breaking changes: 移除最新評論的評論服務商選擇，默認為第一個評論服務商

feat: 增加 waline avatarCDN 配置（最新評論也會更新）
feat: archives 的 標題 在 menu 配置中獲取
fix: 修復文章頁 mathjax 因字體小導致顯示重疊的 bug close #587
fix: 修復 mathjax 在列表下，導致 列表沒有樣式的 bug  close #586
improvement: 減少卡頓，apple 裝置首頁背景 background-attachment 設為 scroll

source/css/_layout/aside.styl

@@ -35,15 +35,6 @@
           display: none
 
   .card-info
-    img
-      width: 110px
-      height: 110px
-      border-radius: 70px
-      transition: all .5s
-
-      &:hover
-        transform: rotate(360deg)
-
     .author-info
       &__name
         font-weight: 500
@@ -331,6 +322,21 @@
     &:hover
       animation: more-btn-move 1s infinite
 
+.avatar-img
+  overflow: hidden
+  margin: 0 auto
+  width: 110px
+  height: 110px
+  border-radius: 70px
+
+  img
+    height: 100%
+    transition: all .5s
+    object-fit: cover
+
+    &:hover
+      transform: rotate(360deg)
+
 @keyframes more-btn-move
   0%,
   100%

source/css/_layout/head.styl

@@ -157,12 +157,9 @@
         top: 70px
         transition: top .5s
 
-// css hack
-// all browser in ios and safari in all apple device
-_::-webkit-full-page-media,
-_:future,
-:root #page-header.full_page
-  background-attachment: scroll !important
+.apple
+  #page-header.full_page
+    background-attachment: scroll !important
 
 #page
   h1.page-title

source/css/_layout/sidebar.styl

@@ -22,22 +22,12 @@
     &.open
       transform: translate3d(-100%, 0, 0)
 
-    & > .author-avatar
-      padding: 1.3rem 1.5rem 0
-      text-align: center
-
-      img
-        width: 110px
-        height: 110px
-        border-radius: 70px
-        transition: all .5s
-
-        &:hover
-          transform: rotate(360deg)
+    & > .avatar-img
+      margin: 1rem auto
 
     .site-data
       display: table
-      padding: .6rem .5rem 0
+      padding: 0 .5rem
       width: 100%
       table-layout: fixed
 

source/css/_layout/third-party.styl

@@ -79,14 +79,13 @@ if hexo-config('waline.bg')
       display: none
 
 // mathjax
-.mathjax-overflow
+mjx-container
   overflow-x: auto
   overflow-y: hidden
 
-mjx-container[jax='CHTML'][display='true']
-  overflow-x: auto
-  overflow-y: hidden
-  padding-bottom: .3rem
+  &:not([display])
+    display: inline-grid
+    max-width: 100%
 
 .aplayer
   color: $font-black