Fix more rubocop style issues

app/models/node.rb

@@ -141,7 +141,7 @@ class Node < ActiveRecord::Base
       # update changeset bbox with *old* position first
       changeset.update_bbox!(bbox)
 
-      # FIXME logic needs to be double checked
+      # FIXME: logic needs to be double checked
       self.latitude = new_node.latitude
       self.longitude = new_node.longitude
       self.tags = new_node.tags

app/models/old_way.rb

@@ -70,7 +70,7 @@ class OldWay < ActiveRecord::Base
 
     add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
 
-    old_nodes.each do |nd| # FIXME need to make sure they come back in the right order
+    old_nodes.each do |nd| # FIXME: need to make sure they come back in the right order
       node_el = XML::Node.new "nd"
       node_el["ref"] = nd.node_id.to_s
       el << node_el

app/models/relation.rb

@@ -135,7 +135,7 @@ class Relation < ActiveRecord::Base
     el
   end
 
-  # FIXME is this really needed?
+  # FIXME: is this really needed?
   def members
     @members ||= relation_members.map do |member|
       [member.member_type, member.member_id, member.member_role]

app/models/trace.rb

@@ -219,7 +219,7 @@ class Trace < ActiveRecord::Base
   end
 
   def xml_file
-    # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
+    # TODO: *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
     filetype = `/usr/bin/file -bz #{trace_name}`.chomp
     gzipped = filetype =~ /gzip compressed/
     bzipped = filetype =~ /bzip2 compressed/