Translations:App Link/24/en

Finally, the pull request and merge happened:
 * App::Link: the big merge, old thread (July 2019), pull request #2350 (the BIG merge), LinkMerge branch.
 * App::Link: the big merge, main thread (July 2019)
 * A simple path description of Link, 019, Link stage, Asm3, merge? (August 2019)
 * PR#2559: expose link and navigation actions, an introduction to the Link feature in 0.19 (September 2019).