NEWS: mention more changes in 5.2.0

Co-authored-by: Karel Kočí <cynerd@email.cz>
Co-authored-by: Vojtech Myslivec <vojtech.myslivec@nic.cz>

NEWS

 5.2.0
 -----
 
+* New reForis features
+  * Overview tab
+  * Storage plugin with option for persistent system logs
+  * Factory reset from web interface
+  * Support for Honeypot as a Service (haas.nic.cz)
+  * An option to set a router hostname
+  * Fix DHCP range configuration check
+  * A few design improvements
+* WebApps: New graphical design with optional dark mode
+* Sentinel: Introduce replacement for firewall logs collector
+* Turris MOX: Update firmware for SDIO card
 * Add RIPE Atlas SW probe and netdata as package lists
 
 5.1.5