[frio] Improve Group Editing (#5349)

[frio] Improve Group Editing (#5349)

* Improve group-editing and edit-navigation.

Use icons next to groups and header for navigation to editing groups and adding new groups.
Also use icon from group-sidebar for editing groups.

* Unify look&feel of contact search bars.

* Remove nogroup page and replace with /group/none.

* Make sure proper items are selected in aside.

* Use icon instead of link for 'View Contacs' on profile page.

* Fix none-working /group/none.

* Fix highlighting for everyone in group aside.