Merged features from p4edge repo including BMv2 support, updated UI, …

…latest T4P4S, etc.

Bugfix: changing to bash shell

Rename example program name

Merge pull request #36 from rst0git/p4pi-web

p4pi-web: update changelog version

Merge pull request #29 from rst0git/p4pi-web-datta-icon

p4pi-web: fix datta icon.css

Merge pull request #5 from rst0git/settings-redirect

p4pi-web: update login/logout redirect URL