You might like to check out https://www.overleaf.com as a collaborative LaTeX editor, and we now have an integration with services such as Plot.ly[1] and Mendeley[2] to make it easy to pull in figures and references.

Feedback very welcome -- I'm one of the co-founders and we're continually developing the platform to better serve researchers and student authors.

[1] https://www.overleaf.com/blog/201-reproducible-and-collabora...

[2] https://www.overleaf.com/blog/184-mendeley-integration-is-he...