Imported Python library

From https://github.com/charlierguo/gmail
Wrapper script
Compute URL
JS lib use python
Use all mail inbox
Async JSON
Restored build
Retrieve \All mailbox
Handle unicode headers
Improved identifier computation
Reorganize python code
GMail submodule
Cloning with HTTPs
Merge pull request #6 from Papiel/out-with-the-old

Out with the old