Merge pull request #5 from nossrf/master

Minor fixes noticed
Add english translation for prompts
Merge pull request #6 from kolibre/narrator-english-translation

Add english translation for prompts
Update en_translations.csv

Fix English number translations
Merge pull request #7 from kolibre/translation-bugs

Update en_translations.csv
Include busyhandler in narrator namespace
Include threshold value for db timeouts
Merge pull request #8 from kolibre/db-busy-handler

Db busy handler
Use soundcard default for high latency output as default

This seem to help for playback on a raspberry pi, and is
more describing.
Add ringbuffer test
Fix warnings in tests
Rewrite buffer allocation algorithm in Narrator.cpp
Use narrator stop instead of abort
Simplify portaudio callback
Prebuffer half of the ringbuffer before starting portaudio stream
Merge pull request #9 from kolibre/use-high-latency-by-default

Use high latency by default
Merge pull request #10 from kolibre/narrator-fixup

Narrator streaming fixup