* [user panel] combined 7 commits into 1:
[user side nav] added 'fold/unfold' for the sidebar
[redesign] redesigned toolbar for 'my libs' & 'shared with all'; redesigned 'top bar' for 'help', 'clients' and other pages
[Shared with all] 'share existing libraries' dialog: added the 'close' icon back, enabled clicking outside to close the dialog
['Invite Guest' page] redesigned the toolbar
['Share Admin' - 'Links'] 'Share Links' page: redesigned the toolbar
['Share Admin' - 'Links'] 'Upload Links' page: redesigned the toolbar
cleaned up code
* [user side panel] update
* [user panel] update
* [code style] update: remove an eslint warning
* ['Files'] make the headings such as 'My Libraries' and the library star/unstar icons left-aligned
* ['dir view'] 'path bar' improvement: display the current side nav item(such as 'Files', 'My Libraries', groupname & etc.) in it
* [side nav] improvement: when visit the siteRoot page, highlight the 'Files' tab
* [border color] modified border color in tables & other UIs (so that they are same)
* [side nav] redesigned it: added a new item 'Files', and made 'My Libraries' and some other items as its sub nav items
* ['Files'] added new page 'Files'(added 'My Libraries' to it)
* ['Files'] added 'Shared with me' to it
* ['Files'] added 'Shared with all' to it
* ['Files'] added 'Shared with groups' to it (removed 'details' for 'department')
