gitea/templates/shared
wxiaoguang e61b390d54
Unify and simplify TrN for i18n ()
Refer: https://github.com/go-gitea/gitea/pull/18135#issuecomment-1003246099

Now we have a unique and simple `TrN`, and make the fix of PR  also use the better `TrN` logic.
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issuelist.tmpl Unify and simplify TrN for i18n ()
searchbottom.tmpl Search and Diff CSS enhancements ()