renamed script folder to src
finished installation directives
renamed sr_icons to sr_visualization to avoid potential conflicst

fixed python modules to searc properly for .ui and icons even when
installed

removed dependencies to deprecated roslib
bug fixes
fixed doc
added CHAMGELOG.rst. some formatting package.xml for consistency
now actually commited CHANGLOG
added repository and bugtracker in package.xml
1.3.0
Merge pull request #21 from shadow-robot/F_add_install_directives

F add install directives