Add git submodules for jedi, jsonrpc, click

Also reflect in requirements.txt. Submodules pointing to:
- jedi v0.8.0
- jsonrpc branch feature/py26
- click 0.7
Include submodules in sys.path
Make anaconda requests easier to test
Add jsonrpc support until elisp-json-rpc is integrated
Made rpc methods simpler and more concise
Only include anaconda-mode in coverage
Pass travis build directory via salt pillar
Update broken tests
Rearrange fixtures