[cXF] Add What's New beside Alerts tab 1.7.0

• new option: change the FA icon

*note: check and edit settings in style properties after updating from the previous versions

• bugfix for What's new tab beside Search tab and search is disabled for certain groups

• compatibility fix for [XenConcept] Linked Accounts add-on

• compatibility fix for UI.X style: now it works with this style beside Alerts icon
• remove link title on hover when icon is beside Alerts tab

• option to show What's New icon on the far right corner on mobile

• NEW: option to set link button to point to What's New or New posts page

• option to set icon color

• css icon fix
• option to add What's new beside Alerts tab or beside Search Tab

• option to add text beside icon