sources: parse more profile url formats.

Add support for parsing these URL formats:

* https://www.artstation.com/felipecartin/profile
* https://www.deviantart.com/nlpsllp/gallery
* https://fantia.jp/asanagi
* https://www.lofter.com/front/blog/home-page/noshiqian
* https://www.lofter.com/app/xiaokonggedmx
* https://www.lofter.com/blog/semblance
* https://q.nicovideo.jp/users/18700356
* https://dic.nicovideo.jp/u/11141663
* https://3d.nicovideo.jp/users/109584
* https://3d.nicovideo.jp/u/siobi
* https://game.nicovideo.jp/atsumaru/users/7757217
* https://www.pixiv.net/user/13569921/series/81967
* https://pixiv.cc/zerousagi/
* https://www.plurk.com/u/ddks2923
* https://www.plurk.com/m/u/leiy1225
* https://www.plurk.com/s/u/salmonroe13
* https://www.plurk.com/RSSSww/invite/4
* https://skeb.jp/@okku_oxn/works
* https://www.tumblr.com/blog/view/artofelaineho/187614935612
* https://www.tumblr.com/blog/view/artofelaineho
* https://www.tumblr.com/blog/artofelaineho
* https://www.tumblr.com/dashboard/blog/dankwartart
* https://rosarrie.tumblr.com/archive
* https://whereisnovember.tumblr.com/tagged/art
* https://twitpic.com/photos/Type10TK
* https://www.weibo.com/detail/4676597657371957
* https://www.weibo.com/u/5957640693/home?wvr=5
* https://www.weibo.com/lvxiuzi0/home

app/logical/source/url/lofter.rb

@@ -18,6 +18,15 @@ class Source::URL::Lofter < Source::URL
     in /127\.net$/, "img", _
       nil
 
+    # https://www.lofter.com/front/blog/home-page/noshiqian
+    in "www.lofter.com", "front", "blog", "home-page", username
+      @username = username
+
+    # http://www.lofter.com/app/xiaokonggedmx
+    # http://www.lofter.com/blog/semblance
+    in "www.lofter.com", ("app" | "blog"), username
+      @username = username
+
     # https://gengar563.lofter.com/post/1e82da8c_1c98dae1b
     in /^([a-z0-9-]+)\.lofter\.com$/, "post", work_id unless host.in?(RESERVED_SUBDOMAINS)
       @username = $1