Solves #45: Add badge to unread articles section to indicate total count of unread articles

See merge request !9

Solves #21 and #22

Closes #21

See merge request !8

Solves #26: UTF-8 problem on article detail on android 5.0

See merge request !7

Adds template system for share intent

See merge request !6

- Articles not sorted by publication date
- Display a message stating all articles have been read after comming back from a feed with a single unread article

Add sectionning of subscriptions

See merge request !5

Solves #10: fetch subscription images

See merge request !4

- Finish LoginActivity after login to prevent vavigate back to it
- Add transition animations between fragments

Refactor subscriptions to use database

See merge request !3

- Use only one fragment with different viewmodels
- Add a ViewPager to switch between subscription sections
- Sort all subscriptions by alphabetic title and unread subscriptions by newest item

See https://github.com/FasterXML/jackson-module-kotlin/issues/176

Solves #15: Implement Jetpack's NavigationUI and get rid of the router

See merge request !2

Incidentaly solves #20 as expected

Database rework

See merge request !1