Fixed font name
new documentation
add doxygen ingnore files
change readme
add licence to readme
Developers names => developers nicknames

+ added MarkusH
check for config file present before reading (MarkusH's improved commit)
added more documentation, fixed Doxyfile to use relative paths
documentation of the app class
Merge branch 'master' of https://github.com/SQIIDevTeam/sidequest2 into SQIIDevTeam-master

Conflicts:
	Doxyfile
	SideQuest II/SideQuest II/Config.cpp
	doc/html/_app_8h_source.html
	doc/html/_button_8h_source.html
	doc/html/_circle_state_8h_source.html
	doc/html/_config_8h_source.html
	doc/html/_credit_state_8h_source.html
	doc/html/_input_manager_8h_source.html
	doc/html/_main_menu_state_8h_source.html
	doc/html/_menu_8h_source.html
	doc/html/_option_state_8h_source.html
	doc/html/_play_state_8h_source.html
	doc/html/_rect_state_8h_source.html
	doc/html/_resource_manager_8h_source.html
	doc/html/_stack_8h_source.html
	doc/html/_startup_state_8h_source.html
	doc/html/_state_8h_source.html
	doc/html/_state_manager_8h_source.html
	doc/html/_tilemap_8h_source.html
	doc/html/_tilemap_object_8h_source.html
	doc/html/annotated.html
	doc/html/class_app-members.html
	doc/html/class_app.html
	doc/html/class_button-members.html
	doc/html/class_button.html
	doc/html/class_circle_state-members.html
	doc/html/class_circle_state.html
	doc/html/class_config-members.html
	doc/html/class_config.html
	doc/html/class_credit_state-members.html
	doc/html/class_credit_state.html
	doc/html/class_input_manager-members.html
	doc/html/class_input_manager.html
	doc/html/class_main_menu_state-members.html
	doc/html/class_main_menu_state.html
	doc/html/class_menu-members.html
	doc/html/class_menu.html
	doc/html/class_option_state-members.html
	doc/html/class_option_state.html
	doc/html/class_play_state-members.html
	doc/html/class_play_state.html
	doc/html/class_rect_state-members.html
	doc/html/class_rect_state.html
	doc/html/class_resource_manager-members.html
	doc/html/class_resource_manager.html
	doc/html/class_stack-members.html
	doc/html/class_stack.html
	doc/html/class_startup_state-members.html
	doc/html/class_startup_state.html
	doc/html/class_state-members.html
	doc/html/class_state.html
	doc/html/class_state_manager-members.html
	doc/html/class_state_manager.html
	doc/html/class_tilemap-members.html
	doc/html/class_tilemap.html
	doc/html/classes.html
	doc/html/dir_0773a9c9045db70512aec2b18d0cd07f.html
	doc/html/dir_4ba45c99503bef42cc26f327d82ab65e.html
	doc/html/files.html
	doc/html/functions.html
	doc/html/functions_func.html
	doc/html/graph_legend.html
	doc/html/hierarchy.html
	doc/html/index.html
	doc/html/inherits.html
	doc/html/math_8h_source.html
	doc/html/sf_helper_8h_source.html
	doc/html/string__op_8h_source.html
	doc/html/struct_tilemap_object-members.html
	doc/html/struct_tilemap_object.html