Release v0.3.0

The main feature added through this release is a new layout system for active laws, enabling users to filter and sort laws by many new criteria, such as:

Sorting
* Recently updated
* Newest/oldest
* Closing soon

Filtering
* Voted / Non Voted
* Open / Closed
* Label based
* With/without closing date

Pending stuff for this pull request:
- [ ] Update translations for new sorts & filters
- [ ] Fix text styles between sorts & filters (and dropdown)
- [ ] Fix style for sort dropdows so it has the same width as open/close filter