ChildrenQuery and ParentQuery now take into account documents that have been marked.

Closes #3144
Fixed minor issue in ASCT#indexExists(...)
Added shortcuts for several common commands

added simple way to add more complex mappings as well as shortcuts for flush
and status etc. all checking if requests return failed shards
Making deb installable by being lintian compatible

According to #2515 the ubuntu software center does not allow to install
debian packages which are not lintian compatible

I worked on the package and made it lintian compatible by doing

* Ignoring errors about arch dependent binaries as we will not split
  this package. The arch dependent libraries are used correctly.
* Added a copyright file pointing to the apache license in debian

Closes #2515
Closes #2320