initial commit
new clients, ui, and sessions
invoice form
add ruby version in Gemfile
commit precompiled assets
Revert "commit precompiled assets"

This reverts commit 6d4191dd37dbdf352f51fbb2f27d422c91994449.
serve assets via Rails
add ability to download invoice in pdf
add index view for invoices
use a different binary for wkhtmltopdf
use gem to provide wkhtmltopdf binary
page cleanup
remove link for i nvoice items, table css, other ui stuff
css fix for menu links
subnav labels
- update icomoon and css
- make invoice number required
- fix error checking for invoice items (for js)
use invoice number as invoice filename
add link to user profile
add total invoice amount
page size, currency and invoice pdf ui changes