Filter support for BaseStorage iterator

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Testing Python 3.4

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Add symbolic link storage

* Adds a symbolic link storage for developers. To enable it, put this
  to your config: COLLECT_STORAGE = u"flask.ext.collect.storage.link"
  then run your `collect` script to create all the links from the
  static folders to the intance folder.

* NOTE only files are symlinked, not folders!

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
Co-authored-by: Kamil Neczaj <kamil.neczaj@cern.ch>
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Update shortcuts.
Desctionation to set
Migrate to new version of pylama
Update contributors
Bump version: 0.2.3 → 1.0.0
Bump version: 1.0.0 → 1.0.1
Bump version: 1.0.1 → 1.0.2
Bump version: 1.0.2 → 1.0.3
Bump version: 1.0.3 → 1.0.4