NW.js requires us to disable pointer events on the inline images,
otherwise the drag/drop events are generated for the images rather
than for the html elements representing OSD items.
Move outputDir to a constant.
Add an output variable which contains the filenames for each
output file.
Remove usage of 'let' and 'for(... of [Object])' from osd.js,
since uglify doesn't support ES6 and babel failed on
google-analytics-bundle.js
Fix 'deploy-receiver-css'. uglify() was being called as part of
the pipeline instead of the correct minifyCSS() call.
Let npm sort the deps rather than editing them manually
Add missing openlayers dependency
[RTH], [WPT], [ALT], [POS] and [A+H].
Characters have been added to all character maps. Leave a white
character after mp/h and the first 2-char image intentionally to
avoid the preview in the configurator showing an icon between
2 lines.
