Icon bg (#7871)

* ['Files', 'my libs', 'shared with me', 'shared with all', 'group', 'department' pages] added background to the library items' operation icons when hovering on them

* ['share' dialog] 'Share Link'(link list, link-authenticated-emails, link-authenticated-users): added background to the items' operation icons when hovering on them

* ['share' dialog] 'Share to user': added background for the sharing items and the operation icons when hover on them

* [select editor] improved it; added background to the 'edit' icon when hover on it

* ['share' dialog] 'Share to group': added background for the sharing items and the operation icons when hover on them; fixed it for mobile

* ['share' dialog] 'Custom sharing permissions': added background for the permission items and the operation icons when hover on them

* ['share' dialog] 'Invite Guest': added background for the items and the operation icons when hover on them

* ['share' dialog] 'Share to other server': added background for the items and the operation icons when hover on them

* [repo 'Folder Permission' dialog] 'User Permission': added background for the items and the operation icons when hover on them

* [repo 'Folder Permission' dialog] 'Group Permission': added background for the items and the operation icons when hover on them

* [repo 'Share Admin' dialog] 'Share Link': added background for the sharing items and the operation icons when hover on them; improved it

* [repo 'Share Admin' dialog] 'Upload Link': added background for the sharing items and the operation icons when hover on them; improved it

* [repo 'Share Admin' dialog] 'User Shares': added background for the sharing items and the operation icons when hover on them; improved the permission editor

* [repo 'Share Admin' dialog] 'Group Shares': added background for the sharing items and the operation icons when hover on them; improved the permission editor

* [repo 'API Token' dialog] added background for the items and the operation icons when hover on them

* [group/department 'Manage group members' dialog] added background for the operation icons when hover on them

* ['select members from departments' dialog] added background for the operation icons when hover on them

* [library list pages] removed the background when hover on the 'star/unstar' icons of the library items

* ['back' icons] added background for the 'go back' icons when hover on them

* ['my deleted repos' dialog] added background for the operation icons when hover on them

* ['Favorites' page] added background for the items and the operation icons when hover on them

* ['Wikis' page] added background for the operation icons when hover on them

* ['Invite Guest' page] added background for the items and the operation icons when hover on them

* ['Share Admin'] 'Libraries' page: added background for the items and the operation icons when hover on them

* ['Share Admin'] 'Folders' page: added background for the items and the operation icons when hover on them

* ['Share Admin'] 'Share Links' page: added background for the items and the operation icons when hover on them

* ['Share Admin'] 'Upload Links' page: added background for the operation icons when hover on them

* [repo 'Modification History' dialog] added background for the operation icons when hover on them

* [repo 'Snapshot' page] added background for the items and  the operation icons when hover on them

* [folder 'share link' page] added background for the items and the operation icons when hover on them

* [file 'History Versions' page] changed the 'more' icon and added background for the the operation icons when hover on them

* [personal 'settings' page] 'Linked Devices': added background for the items and the operation icons when hover on them

* ['library view' page] 'move/copy' dialog: added background for the 'clear search keyword' icon when hover on it

* ['library view' page] added background for the operation icons when hover on them

* ['system admin'] 'Devices' pages: added background for the items and the operation icons when hover on them

* [system admin] repos/users/groups/inst/... pages: added background for the operation icons when hover on them

* [system admin] 'Libraries - Trash' page: added background for the items and the operation icons when hover on them

* [system admin] 'Users' pages: added background for the operation icons when hover on them

* [system admin] 'Departments' pages: added background for the operation icons when hover on them

* [system admin] 'Organizations' & 'Search Organizations' pages: added background for the operation icons when hover on them

* [system admin] 'Institutions' pages: added background for items & the operation icons when hover on them

* [system admin] 'terms and conditions' pages: added background for items & the operation icons when hover on them

* [system admin] 'Links - Share Links' pages: added background for items & the operation icons when hover on them

* [system admin] 'Links - Upload Links' pages: added background for items & the operation icons when hover on them

* org page use new op-icon

* use common edit icon

---------

Co-authored-by: Michael An <1822852997@qq.com>

frontend/src/pages/org-admin/libraries/org-all-repos.js

@@ -244,7 +244,7 @@ class RepoItem extends React.Component {
             <Dropdown isOpen={this.state.isItemMenuShow} toggle={this.toggleOperationMenu}>
               <DropdownToggle
                 tag="a"
-                className="attr-action-icon sf3-font sf3-font-more-vertical"
+                className="op-icon sf3-font-more sf3-font"
                 title={gettext('More operations')}
                 aria-label={gettext('More operations')}
                 data-toggle="dropdown"