Update Rope url

This project has been moved to GitHub python-rope / rope
Merge pull request #67 from ustun/patch-1

Update Rope url
Added request-deferred dependency to traad.el.
Fixed typo in test code.
Fixed some code errors in bottle.py

Should consider just upgrading our version.
PEP8 cleanup of app.py
Improved use of read-file-name in the import refactorings.
Reading code at server rather than client where appropriate.
testsuite paths are now absolute rather than relative.
Removed unnecessary file-read from json api test.
Incremented the protocol version.