Duda I/O: adding Duda I/O framework tests.

The following patch adds a web service based on Duda I/O framework,
at the moment only tests #1 and #6 are implemented. For the next round
we will cover Database tests.

For more details about the stack and components please refer to:

http://duda.io
http://monkey-project.com

note: this is the second pull request upon requirement to drop the stack
from the patch. This PR replaces #905.

Signed-off-by: Eduardo Silva <edsiper@gmail.com>
Merge remote-tracking branch 'duda/duda_light' into duda-946
Replace raw dudac files with download

Migrate build part of run_application to the
installation system
Give duda a clean environment, and update setup.py to use it
Declare duda directory as a python module
Enter duda into the automated verification system
Declare database type for duda

Also fixes a travis bug this caused me to find
Merge pull request #981 from hamiltont/duda-946

Finish adding duda framework