added an optional migration step to reindex the Language index
Merge remote-tracking branch 'upstream/master'
added migration-preparation step to update the Language index. Made output a bit nicer
simplyfy the javascript
show spinner as long as the migration is running
show errors prominently
add a log message when individual steps are done
Merge remote-tracking branch 'upstream/master'
removed unused import; make sure we only write strings to result
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge pull request #30 from pysailor/master

Improve migration user story