Added users.xml file to ignored.
Created User model with static method for fetching XML file from external server. This method can be run as console script.
Added lxml to required packages.
Added requests to required packages.
Refactoring Users model. Now using requests for fetching XML file.
Written method for parsing users XML file.
Replaced users list in API view with new data from XML.
Displaying user images on all views.
Added comments to javascript code.
Refactored code for higher pylint score.
Updated unit tests.
Merge pull request #6 from swierol/bug_3396

Bug 3396