Fixing IndexID -> TransformerId for transformers
Making sure that we have an auto incrementing transformer id
Adding fs stats to /admin/stats
Avoid error when running WaitForRestore
Better detection of corrupt files
Merge branch 'RavenDB-1369' of github.com:ReginaBricker/ravendb into New3
Refactoring index merging work
Avoiding NRE
index merge suggestion: added tests + fix from prev commit