meta/new-web: release announcements as data

... instead of only git meta-data attached to tags.

original commit: a8fc2d5ec900611212fa110de5a4a6f26838aaa4
v6.0.1 announcement

original commit: 98ae3d8b2dd16162143699b888887b2d41bff6c4
v6.1 announcement text

original commit: 7ba6c663cd310dc5c63c73c181b514c0930933e2
v6.1.1 announcement

original commit: fff23e74106e2692faa4fa49655b21779ad5dc65
Remove extra directories.
Move to announcements directory.
Fix path for moved announcements.