rework of volume plugin, added volume control buttons for client
Merge remote-tracking branch 'upstream/master' into volume

Conflicts:
	wall/static/style.css
code cleanup; comments
check for browser support
Use the Python 2 binary as shebang, because we have no Python 3 support at the moment
Merge pull request #30 from sabl0r/python2

Use the Python 2 binary
"not supported" => "outdated"
Merge pull request #29 from sabl0r/nowebsocket

Check for browser support on client side
replaced panels (i.e. post-new-panel) with screens

added support for single Bricks
added base Brick class
implemented utility methods call and postNew
added general style for common elements / classes
url: implemented (Youtube) search
updated bricks to derive from base Brick
fixed: browser check used old element
Merge pull request #31 from NoyaInRain/url-search

url: implemented (Youtube) search
renamed x to vbox
added reference to icons
Merge remote-tracking branch 'upstream/master' into volume

Conflicts:
	wall/res/static/client.css
	wall/volume/static/volume.js
cleanup
Merge pull request #27 from krmnn/volume

Volume plugin