add prototype code to overlap layers.

- requries to modify recilne map view to provide a way to custom map initialization (initMap function).
use leaflet 0.7.3 instead of the one in recline.
add leaflet-tw.
point recilne to github.com/hychen/recline custom-map version.
Merge branch 'master' into feature/muti-layer
Add correct bootstrap version for recline.
Remove unecessery traslation word "view" to keep body class correct.
Remove body class translate gettex wrap.
Adjust panel width for a bigger map.
Add maylayer option to create page.
update laaflet-tw head.
get avaliable titles from rchss wmts server.
add leaflet-tw to dependends.
Add chosen project for quick select.
Add map layer options when create map.
dispaly overlap titiles based by time map configuration in backend.
tweak opacity.
update po files.
add various sytle for front-end.
Merge branch 'feature/muti-layer' of github.com:g0v/timemapper into feature/muti-layer