reformatted ascent control buttons
fixed layout bug when having no sessions
darkened background more
replaced CSS classes by mixins on start page
introduced feedback service
redid content of start page
make boulder markers bigger on touch screens
readded login section
using foundation source ordering to shift columns
added angular-foundation
added login controller
implemented login in modal
putting login into start menu
fixed some typos and formulations
introduced pub/sub for current user / login status
added contact email and styled footer a bit