We cannot update all views at once, because this happens:
```
file:///usr/share/harbour-ttrss-cnlpete/qml/models/FeedModel.qml:51:
TypeError: Cannot read property 'categoryId' of null
```
Tested on sailfish
Closes#142
- Added a LICENSE.txt
(See "How to apply this license" at
http://choosealicense.com/licenses/gpl-2.0/)
- Added license headers to files where missing.
- Used /* */ comments for license headers. (Allows folding in
QtCreator.)
- Replaced BSD template from `harbour-ttrss.qml` with GPL.