Add packaging metadata
Use env python for scripts
Make pushmanager.testing more explicit in imports
Fix import pushmanager.servlets
Fix import pushmanager.testing
Use explicitly imported pushmanager.testing modules
Add explicit imports from pushmanger.testing
Fix import for ui_*
Fix import pushmanager.pushmanager_main
Fix import pushmanager.core
Refactor app handlers
Turn main/api into entry_points
Explicit port for request bookmarklet