Fix example data always checked.

Now, the example data is only checked by default the first time.
Fix wrong variable name - Fixes #929
Pick a stable version for the sql-formatter.
Fix installation with different interface langauges - Fixes #937
Add bugfix 07180a551763e6a2a2b8204cade19e6e07acaa98 in changelog.
Changed 'dashboard' to 'Dashboard'
Changelog updated
Merge pull request #946 from jeroendesloovere/dashboard-js-fix

Dashboard js fix
Fix ForkInstaller class, defaultExtras is a class member not a local variable.
Merge pull request #948 from speakserve/fix-fork-installer

Fix ForkInstaller class, defaultExtras is a class member not a local variable
Merge remote-tracking branch 'upstream/master'