* 12.0 change add existing file in wiki edit
* 01 delete create wiki from existing library
* 02 change click wiki name jump to edit page and delete edit icon
* 03 delete select existing file to create new page
* optimize edit wiki
* 04 old wiki page use the early version 11.x features
* optimize wiki permission
* wiki add wiki2
* delete page file
* fix wiki test
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Co-authored-by: ‘JoinTyang’ <yangtong1009@163.com>
* change notification popover
delete useless test
* Update iconfont and user notification ui
* change notification dialog detail
* format css
* update url of all notifications when send notice email
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Co-authored-by: lian <imwhatiam123@gmail.com>