#291 added page url field.
#291 reused page permalink logic to show blog url.
#291 implemented url field in edit blog post form.
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#301 media manger modification, styled upload info messages.
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#240 fixed upload buttons issues cross browser tested.
Merge branch 'dev' into dev-security