added .gitignore file
Implement error dialoge.

msgDialogs.py: Implement dialog for displaying error messages.  The new
procedure is called errorMessage.

gnome_connection_manager.py: Implement procedure to check if a command
is installed within the systems execution path.  The new procedure is
called checkCommand.
Implement setuptool compatibility
Fix setup.py to install package data correctly
Make path to glade depending on script location
Erasing the big header from __init__.py
Merge branch 'stable'

Conflicts:
	.gitignore
	gnomeconnectionmanager/__init__.py
Move missing modules to module dir

gnomeconnectionmanager/__init__.py:
Fix msgconfirm NameError
Fix NameError

Error Message was:
NameError: global name 'gnomeconnectionmanager' is not defined