Fix spelling in get_plugin_interface docstring

Change-Id: I2d0910091184ceb183019778fb1adcc3baf8676d
Fix DB Duplicate error when scheduling distributed routers

The error was caused by binding the router to an agent
candidate that was already selected during the scheduling
process.

A DB lookup was also saved by passing the router object
around; this led to a minor style cleanup.

Closes-bug: #1351123

Change-Id: Ib71a0140c8a7fbd5b230609d33487f8adba252e7
Fix spelling mistakes

Change-Id: Idedb39b43bc71db0a7e331cc23535d162177c8b5
Imported Translations from Transifex

Change-Id: Ib0cf4e06e80a5db9e659de9eae9bc68ce4905cc5
Merge "Fix DB Duplicate error when scheduling distributed routers"
Merge "Imported Translations from Transifex"
Merge "Fix spelling mistakes"
Merge "Fix spelling in get_plugin_interface docstring"