ui: network-monitor status on its own line + Refresh translation (v2.7.3)

The location line in the Phone-tab network monitor grew too long once the
status was appended (e.g. "262-01 · Germany · Telekom · Guest (roaming)
⛔ PLMN not allowed").  netStateRender now keeps the identity
(mcc-mnc · country · operator) on the first line and renders the status
elements (roaming tag + forbidden badge) in a block span on a second line;
a location without a status still renders on one line.

Also add the missing Russian translation for the monitor's Refresh button
(t() fell back to English): 'Refresh': 'Обновить'.

- frontend/index.html: two-line location render, LANG_RU Refresh, 2.7.3
- frontend/tests/netstate.test.js: pins the block-span layout and the
  one-line no-status case
- sw.js cache simple-v206; version trio 2.7.3

pysim_simple_server/server.py

@@ -25,7 +25,7 @@ from osmocom.construct import GsmOrUcs2Adapter
 from osmocom.tlv import BER_TLV_IE
 
 
-VERSION = '2.7.2'
+VERSION = '2.7.3'
 
 MAX_ENVELOPE_SEGMENTS = 5  # max SMS segments for outgoing C-APDU in ENVELOPE