Changes in the "get-krusader" webpages to add a SHA256 checksum, remove the references to Sourceforge files, use references to KDE Plasma, etc.
- The SHA256 checksum of Krusader 2.7.0 was be added.
- The references to Sourceforge files were removed, since there are no Krusader versions published in Sourceforge since many years ago.
- The "KDE5" text about the 2.7.0 version was removed, because Krusader 2.7.0 works nicely (icons, etc.) in non-Plasma desktop environments, and because technically it was KDE Plasma 5 what the text was referring to.
- Some related and minor changes.
Differential Revision: https://phabricator.kde.org/D14159