* Update conf and README in apollo/modules/data.

* perception: clean visualizer tool code and log

* perception: clean opengl_visualizer code and log

* From this revision, the docker image mirror prompt was removed, instead
of that, an -C option is added for pulling docker image from China mirror,
this also gives a chance to save 10 seconds for every automatically build.

* A -image <version> option is also added to specify which version docker
image to pull.