Enable most of the pyflakes checks.

Fixes: bug #1185833

Change-Id: Ife71a86a4c24f97b8bdbaa2c13b7edc05ace34f0
Make 'Router created' message translatable

Change-Id: If0e246157a72fd1cabdbbde77e0c057d9d611eaa
Merge "Make 'Router created' message translatable"
Merge "Enable most of the pyflakes checks."