change severity of #54 and #55 (#33)

* change 54 to Warning, 55 to Note

default.js

@@ -401,12 +401,11 @@
     "n.title": "{number} maximum street name length",
     "n": 30,
 },
-"54.severity": 'E',
+"54.severity": 'W',
 "54.title": "No city on segment with HNs",
 "54.problem": "Address search will fail with no city name",
 "54.solution": "Make sure the primary or alt names have a city",
 "54.solutionLink": "P:Global/Creating_and_editing_road_segments#Address_Properties",
-"55.severity": 'W',
 "55.title": "No city on named segment",
 "55.problem": "Address search will fail with no city name",
 "55.solution": "Make sure the primary or alt names have a city",