UPDATE VERSION 2.3

- Show total merit (Author: hatshepsut93 https://bitcointalk.org/index.php?topic=5148488.msg52264117#msg52264117)
- Highlight your username in merit, sort your username to first  (Author: hatshepsut93 https://bitcointalk.org/index.php?topic=5176834.msg52267547#msg52267547)
- Show icon go to top
- Fix some bug


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