fix cleanup script
RavenDB-2579 Problem upgrading database
RavenDB-2589 removed Triggers and Extensions from DatabaseStatistics
Merge branch 'RavenDB_1137' of https://github.com/ml054/ravendb
Merge branch 'RavenDB-2589' of https://github.com/ppekrol/ravendb
RavenDB-1137 There is no indication of how much time it will take to upgrade to server
Fixing tests
Merge branch 'RavenDB_1137' of github.com:ml054/ravendb
RavenDB-2586 Smuggler: 'between' should not create database if it doesn't exist
Better header name
Merge branch 'RavenDB-2586' of https://github.com/ppekrol/ravendb
RavenDB-1137 There is no indication of how much time it will take to upgrade to server
Merge pull request #1255 from ml054/RavenDB_1137

RavenDB-1137 There is no indication of how much time it will take to upg...
fixed failing SmugglerBetweenTests
Merge pull request #1256 from ppekrol/RavenDB-2586

fixed failing SmugglerBetweenTests
[WIP] RavenDB-2574: A new approach for notifying that is a bit more complex but avoids race conditions on the Resolved.  Still race conditions can happen with Detected.
Merge remote-tracking branch 'raven-authoritative/master'
RavenDB-2583 Studio is not working on IIS
Merge branch 'RavenDB_2583' of https://github.com/ml054/ravendb
* Storing serialized DatabaseTask in a separate voron tree instead of keeping it as string value.

* Making sure that we flush everything from BsonWriter to memory stream.