Added the Crazyflie.db database back to the repository with a default configuration of agent 1 controlling CF01 in a generously size box

Add the top-level CMakeLists shortcut file to the gitignore. This file is created everytime catkin_make is run

Added latex file for a getting started cheat sheet, i.e., with basic paths, git commands, and launch commands

Added files for the flying agent GUI, currently compiles in Qt but need significantly testing and development for integrating with ROS

reverted CrazyRadio, fixed PPSClient and fucked around with SafeControllerService. Also modified .gitignore to ignore all pyc files.

Added src and include, made GUI compile with QtCreator stuff, to keep the development going. Need to add compilation with ROS stuff, catkin_make