(#37) Manual lat/lon entry is working, but needs more fixing and testing.
(#37) Fixed some click handler and marker bugs. A couple bugs remain.
(#37) Map marker is now removed and lat/lon inputs cleared when switched to Animation mode. This fixes the Map -> Animation -> Map disappearing marker bug, and makes input boxes / map marker / URL consistent between mode switches.
(#37) Fixed lat/lon input rounding problem.
merges code for manual lat/lon