Hardcode snap version while a store bug is fixed (#4806)

* Hardcode snap version while a store bug is fixed
This is a workaround for for a failure in the store, which limits the version to 32 characters.
https://forum.snapcraft.io/t/versions-can-be-at-most-32-characters/1642
Capitalize the summary
* add the snapcraft dirs to gitignore bring back settings.json to ignore

.gitignore

@@ -17,3 +17,9 @@ release
 *.syso
 coverage.txt
 settings.json
+.snap
+*.tar.bz2
+parts/
+prime/
+snap/.snapcraft/
+stage/