Some documentation fixes and improvements
Finish first part of the tutorial
Modify commands to allow them to format commands from yaml in a way thay need
Both Yaml exceptions should make devassistant fail with backtrace
Update docs with some recommendations about dependencies
Make some order in command terminology

- rename classes and modules to make more sense
- document it
Fix dynamic import of dotted modules for Python 2.6
Argh... now fix it without a typo
Add initial appdata
Add the urls and sizes for screenshots at Github
Close #124: Button for switch to main window is missing
Allow specifying user login as default gui hint
Pull latest assistants with small fixes and improvements
close #125: Data are field when back button is pressed
close #126:Refactoring of python code. Now self.parent is used for assistants and kwargs
Some bugfixes like:
-link button can be visible in case of success
-back button is allowed in case of failure. Not in every case
-info_label initialization in case of back action from GUI
It's jiffy, not jiff :)
We like jiffy
Ok, seems like people don't know jiffy, let's use a different motto
Some info about .devassistant + warning for usage of custom assistant