.pnp-container style for table td, v-align middle
adds body.pnp-app general app class

prefixed pnp-container, pnp-clearer, pnp-footer
removes .footer
removes clearer
adds prefixed classes to html layout
removes pnp-container, wraps back link in div
sort week.days by date

in the beginning, days were created manually.
ids order and date order don’t match
but… with before_create :create_days no sort method is necessary, for
weeks created in future
.pnp-app to body, pnp-container wraps everything

pnp-content wraps yield tag
table.table for Twbs match

styles to pnp-footer
removes edit and destroy for Day rows
.pnp-controls to controls
adds Weeks to homepage