I guess you already jumped in 
You might also like to try this tool: translate.sourceforge.net/wiki/virtaal/index
Virtaal fetches suggestions from online translation memory banks and Microsoft Translator (sometimes it gives a nice start and one only needs to clean it up a bit). Be sure to learn the shortcuts: translate.sourceforge.net/wiki/v … cheatsheet
You can upload the .po file from your computer when you are done for the day.
Transifex might get the feature for different projects to share their translation memories in the future, though.
Are you aware of the terminology rewrite: Terminology rewrite sprint