Match "Montserrat" to geographic location

Similar to previous commit, this is part of effort to match places to
the geographic location rather than diplomatic semantics.
Match "Montserrat" to its geographic location:

    region = North America
    country = Montserrat
    division = Montserrat

augur/data/geolocation_rules.tsv

@@ -11079,6 +11079,12 @@ Europe/Montenegro/Heceg Novi/	Europe/Montenegro/Herceg Novi/
 Europe/Montenegro/Northern Region/Pljevlja	Europe/Montenegro/Pljevlja/
 Europe/Montenegro/Western Region/Niksic	Europe/Montenegro/Niksic/
 
+# Montserrat (British territory)
+North America/Montserrat//	North America/Montserrat/Montserrat/
+North America/Montserrat/Caribbean/*	North America/Montserrat/Montserrat/*
+South America/Monsterrat/Caribbean/	North America/Montserrat/Montserrat/
+South America/Montserrat/Caribbean/	North America/Montserrat/Montserrat/
+
 # Morocco
 */Morocoo/*/*	*/Morocco/*/*
 Afirica/Morocoo/Ouarzazate/	Africa/Morocco/Ouarzazate/
@@ -44912,14 +44918,9 @@ Europe/United Kingdom/Null/	Europe/United Kingdom/United Kingdom/
 Europe/United Kingdom/Oxford/*	Europe/United Kingdom/England/Oxford GB
 Europe/United Kingdom/Scotland/Fraserburg	Europe/United Kingdom/Scotland/Fraserburgh
 Europe/United Kingdom/Suffolk/	Europe/United Kingdom/England/Suffolk
-North America/Montserrat//	Europe/United Kingdom/Montserrat/
-North America/Montserrat/Caribbean/*	Europe/United Kingdom/Montserrat/*
-North America/Montserrat/Montserrat/*	Europe/United Kingdom/Montserrat/*
 North America/Turks and Caicos Islands//	Europe/United Kingdom/Turks and Caicos Islands/
 North America/Turks and Caicos Islands/Caribbean/	Europe/United Kingdom/Turks and Caicos Islands/
 North America/Turks and Caicos Islands/Turks and Caicos Islands/	Europe/United Kingdom/Turks and Caicos Islands/
-South America/Monsterrat/Caribbean/	Europe/United Kingdom/Montserrat/
-South America/Montserrat/Caribbean/	Europe/United Kingdom/Montserrat/
 South America/Turks and Caicos Islands//	Europe/United Kingdom/Turks and Caicos Islands/
 South America/Turks and Caicos Islands/Caribbean/	Europe/United Kingdom/Turks and Caicos Islands/
 South America/Turks and Caicos Islands/Turks and Caicos Islands/*	Europe/United Kingdom/Turks and Caicos Islands/*

augur/data/lat_longs.tsv

@@ -147,6 +147,7 @@ country	Moldova	47.2879608	28.5670941
 country	Monaco	43.73844905	7.424224092532953
 country	Mongolia	47.504782	102.997672
 country	Montenegro	42.9868853	19.5180992
+country	Montserrat	16.73603205085212	-62.19174679903016
 country	Morocco	32.549785	-5.480765
 country	Mozambique	-19.302233	34.9144977
 country	Myanmar	20.600856	96.287616