Added the IDE category and Eclipse Luna framework.
Changes motivated by comments at https://github.com/didrocks/ubuntu-developer-tools-center/pull/26.
We detect 'i686' as a 32-bit architecture.
Leave config marking to the BaseInstaller.
Added large tests for IDE/Eclipse.
Eclipse will install its icon to XDG_DATA_DIR.
Some additional logging in tools.py.
Leave the icon file in the Eclipse directory.
Small test changes.
Only keep relevant test

* The other tests will be covered in a more generic manner without asking for
  redownloading Eclipse
Fix pep8
Merge pull request #1 from didrocks/eclipse-luna

Eclipse luna tests removal
Removed some unused imports.
Style fix.
Merge branch 'master' into eclipse-luna
Enable running 32 bits large eclipse tests

* Adapt the process detection for i386 vs amd64 as in eclipse adt
Add assets for medium eclipse tests

* Generate a certificate for mocking eclipse.org and serve assets
Enable local server to serve ?file= redirection
Modify Docker image to include the new certificate
Add eclipse medium tests
Merge pull request #2 from didrocks/eclipse-luna

Eclipse luna medium tests
The Eclipse desktop file is now called 'eclipse.desktop'.
Merge pull request #26 from Tinche/eclipse-luna

Added the IDE category and Eclipse Luna framework.