v1.10.2 patches: continent persistence, city markers, dynamic map center

C changes:
- gstorage.c: encode continent into root key for --persist --restore survival
- gholder.c: decode continent from root + lat/lng storage
- commons.h: add lat/lng fields to GMetrics struct
- geoip2.c/geoip1.h: extract coordinates from MMDB
- json.c: output lat/lng in geolocation JSON

JS changes:
- Remove cityIndex guard for static HTML city dots
- TopoJSON lat/lng fallback for city coordinates
- updateMap fallback city collection
- Dynamic orthographic center based on visitor count
- Mercator stays at [0,15] for full world view

Co-Authored-By: Claude <noreply@anthropic.com>

config/podcast.list

@@ -0,0 +1,64 @@
+# vim: set noexpandtab:
+#1 This file is a user agent list of various podcast-related agents (but not
+#2 limited to). It was distilled from the user agents of a web page which hosts
+#3 a WordPress blog and a podcast.
+#4 \author Bernhard R. Fischer, <bf@abenteuerland.at>
+#5 \date 2019/09/26
+AntennaPod				Podcasts
+AppleCoreMedia			Mediaplayer
+atc						Podcasts
+BacklinkCrawler		Crawlers
+Baiduspider				Crawlers
+Bullhorn Server		PodCrawlers
+Castbox					Podcasts
+CastBox					Podcasts
+Castro					Podcasts
+CCBot						Crawlers
+com.evolve.podcast	Podcasts
+cortex					Facebook
+ExoPlayerLib			Mediaplayer
+facebookexternalhit	Facebook
+fyyd image poller		PodCrawlers
+fyyd-poll				PodCrawlers
+icatcher					Podcasts
+iCatcher!				Podcasts
+iTMS						PodCrawlers
+itunesstored			PodCrawlers
+Kodi						Mediaplayer
+Lavf						Mediaplayer
+LCC						Crawlers
+Luminary					Podcasts
+Mediatoolkitbot		Crawlers
+mindUpBot				Crawlers
+msnbot					Crawlers
+NSPlayer					Mediaplayer
+Overcast					Podcasts
+Photon					Crawlers
+Player FM				Podcasts
+PlayerFM					Podcasts
+Plex						Mediaplayer
+Podbean					Podcasts
+podcast					Podcasts
+Podcast					Podcasts
+PodcastRepublic		Podcasts
+Podcasts					Podcasts
+Podchaser				PodCrawlers
+Podchaser-Parser		PodCrawlers
+Podnews.net				PodCrawlers
+PodParadise				PodCrawlers
+Procast					Podcasts
+ProCast					Podcasts
+Procast (iOS)			Podcasts
+ProcastProCast			Podcasts
+radio.at					PodCrawlers
+RadioPublic				PodCrawlers
+RadioPublicImageResizer	PodCrawlers
+RSSRadio					Podcasts
+Sonos						Mediaplayer
+Spotify					PodCrawlers
+stagefright				Mediaplayer
+Stitcher					PodCrawlers
+UniversalFeedParser	Feeds
+WinampMPEG				Mediaplayer
+XING FeedReader		Feeds
+XING-contenttabreceiver	Feeds