Stuff

I changed a bunch of stuff (see commit messages) and didn't find a suitable branch name.

Note that Buschtrommel stated that his project `ocNews` is licensed under the GPLv2 only.  I updated the file (`qml/ttrss/sailfish/items/Bubble.qml`) and the `Readme.md` accordingly.

The commit https://github.com/michael-k/ttrss/commit/6f3c23b2fa4a5fff3112638bd72e3372becc9b7f introduces a generic TextPage.qml to display the License and the Privacy Policy (the MenuItems had no function to this point).  The one line summary does not state that.