users have address txt field too
address field for signup form
enter address, lat/long added to user on save
method for geocode / reverse- depending on given attr
address_or_coordinates conditional fix
conditional validation for location spec passes/
create location model and come back
Merge branch 'feature/geocode_users' into develop
Location model but does not geocode yet
edit form must include location now, via partial
only display lat/lon for now
form displays user model lat/lon, shall return
html5 geolocation for signup
disable buttons while waiting for location-finding
created separate location model for lat/lon/address. not effective yet. added html geolocation for signup/edit