adding .idea to gitignore
working on navigation layout
adding p2pustrap
Squashed commit of the following:

commit 2b2146a30ff8725d2da95b385bcb337a21c635e0
Author: ercchy <erika@serox.si>
Date:   Tue Sep 23 20:57:58 2014 +0200

    adding the side bar

commit 173db5b0fd0938f2f3dce247de1e6055e9d5d1eb
Author: ercchy <erika@serox.si>
Date:   Tue Sep 23 20:46:20 2014 +0200

    adding the side bar
fixing the order of the items on the sidebar
fixing sidebar and active check
Merge branch 'gh-pages' of https://github.com/p2pu/jekyll-course-experiment into gh-pages
fixing sidebar
fixing sidebar
changing next and previous
adding p2pu tab
working on landing page
working on landing page
working on landing page
adding missing files
Merge pull request #34 from ercchy/gh-pages

CSS and layout update