Adding commands support to the local streamers.

Change-Id: I9a8b685154e144abf12300b82171fddd640c986d
Added a Toolbar to the Dock

Change-Id: I9f5d4e40bb912f61f786b1f4cd70d050f7995f50
Improved the DockToolbar.

Change-Id: Ib9ba9e625d2c92d09e96e95e776a9e2dc6f68ad8
Refactored the CommandHandler.

Change-Id: I60463b9fae5d787f8e96cb1dea48127d7a6b8595
Daniel's code review

Change-Id: Ie19ce92a399428f7b9486b123b417918391d6512
Merge pull request #39 from rdumusc/openbrowser

Opening a Webbrowser from the Dock
Merge branch 'master' of https://github.com/BlueBrain/DisplayCluster
Adding FastCGI library to enable exposing parts of the functionality
and control of the DisplayCluster as web services.

In order to expose the display cluster as a service, a web server with
FastCGI capabilities (Apache, NGINX), must be setup in front of the cluster.
This web server will handle static content requests, and will forward
service calls to the Display cluster using the FastCGI protocol

The FastCGI protocol allow use to directly expose functionality written
in C++ as a web service.

Change-Id: Ifaf0bca249cc3aa689aa5c143635d882cbba1252
Fix: FastCGI web service does not change the status line of the response.

As a result all responses were returned as 200 OK. For this to work
the response has to have a header Status: with the intended status line.

Fixed by dynamically generating the Status: header during response
serialization.
Fix: FastCGI web service does not change the status line of the response.

As a result all responses were returned as 200 OK. For this to work
the response has to have a header Status: with the intended status line.

Fixed by dynamically generating the Status: header during response
serialization.
Merge branch 'juliofcgi' of https://github.com/julitopower/DisplayCluster into juliofcgi

Conflicts:
	tests/fcgiws/ResponseTests.cpp
Merge pull request #41 from julitopower/juliofcgi

Fix: FastCGI web service does not change the status line of the response...
Merge branch 'master' of https://github.com/BlueBrain/DisplayCluster
Cleanup
dcStream performance unit test