Minor refactoring in test suite (systemtransactions.py can be run
even if no Internet connection is available)
Minor refactoring in in node UI
A bit of style fixes and a little refactoring
Added relative imports in pake/config
Reltive imports in pake/nest
Relative imports in pake/node
Relative imports in pake/packages
Relative imports in pake/network
Relative imports and removal of redundant file in transactions module
Style fixes applied and redundant files removed