Bump leaflet-rails

Gemfile

@@ -136,7 +136,7 @@ gem "rails-i18n",           "5.1.1"
 gem "markerb",             "1.1.0"
 
 # Map
-gem "leaflet-rails",       "1.2.0"
+gem "leaflet-rails",       "1.3.1"
 
 # Parsing
 

Gemfile.lock

@@ -348,7 +348,7 @@ GEM
       multi_json
     jwt (1.5.6)
     kgio (2.11.2)
-    leaflet-rails (1.2.0)
+    leaflet-rails (1.3.1)
       rails (>= 4.2.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -377,7 +377,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_magick (4.8.0)
-    mini_mime (0.1.4)
+    mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     mobile-fu (1.4.0)
@@ -815,7 +815,7 @@ DEPENDENCIES
   json (= 2.1.0)
   json-schema (= 2.8.0)
   json-schema-rspec (= 0.0.4)
-  leaflet-rails (= 1.2.0)
+  leaflet-rails (= 1.3.1)
   logging-rails (= 0.6.0)
   markdown-it-html5-embed (= 1.0.0)
   markerb (= 1.1.0)