Update html <head>

Add lang attribut to <html>

Update some <head> <meta> like bootstrap
and html5bp recoomend
Update and move scripts

Update jQuery, jQuery UI, jQuery Migrate
Move scripts to footer where possible
- Jquery, migrate and UI need to stay in header
  because codeigniter adds <script> to html that
  depends on these (specifically calendar widget)
Serve scripts from CDNs
Expose trip going/not going buttons for translation
Code cleanup
compare bools with === not ==
Update and correct markdown
Fix translation of going

llendo >> yendo in trip leg
Merge branch 'master' of github.com:hermzz/gestorneo