pulling out unneeded productcategories methods and routes and viwews
adding redirect for category#new if not logged in
adding redirect for edit product page if it's not your product
adding redirect for product#destroy if not your product
Merge pull request #72 from ricarora/tidying2

Tidying2
customizing the 404 and 500 pages
Merge pull request #73 from ricarora/error-pages

customizing the 404 and 500 pages
thurs
Merge branch 'master' into div
something
Merge branch 'master' of github.com:ricarora/petsy
Merge branch 'master' into css
Merge pull request #74 from ricarora/div

Div
Merge branch 'master' of github.com:ricarora/petsy
Merge branch 'master' into css