Cleanup for USTUTT special case

[koppor]

As user, I retrieved following bibtex entry - (using CCSB and searching for "vino4tosa". Refs #560)

@InProceedings{Breitenbuecher2012,
  author      = {Uwe Breitenb{\"u}cher and Tobias Binz and Oliver Kopp and Frank Leymann and David Schumm},
  booktitle   = {Proceedings of the 20th International Conference on Cooperative Information Systems (CoopIS 2012)},
  date        = {2012-09},
  title       = {Vino4TOSCA: A Visual Notation for Application Topologies based on TOSCA},
  isbn        = {DOI:10.1007/978-3-642-33606-5_25},
  language    = {English},
  pages       = {0--0},
  publisher   = {Springer-Verlag},
  series      = {Artikel in Tagungsband},
  abstract    = {A major difficulty in enterprise computing is the modeling of complex application topologies consisting of numerous individual components and their relationships. Especially in the context of cloud computing, the Topology and Orchestration Specification for Cloud Applications (TOSCA) has been proposed recently for standardization to tackle this issue. However, TOSCA currently lacks a well-defined visual notation enabling effective and efficient communication in order to transport the semantics of the encoded information to human beings. In this paper, we propose a visual notation for TOSCA based on established usability research which provides additional concepts for visual modularization and abstraction of large application topologies.},
  bibdate     = {July 26, 2012},
  cr-category = {H.1.2 User/Machine Systems},
  institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
  keywords    = {TOSCA; Modeling; Visual Notation; Application Topologies},
  notes       = {; citation: Vino4TOSCA: A Visual Notation for Application Topologies based on TOSCA. In: Proceedings of the 20th International Conference on Cooperative Information Systems (CoopIS 2012)},
  type        = {Article in Proceedings},
}

Following cleanup should be made

• migrating DOI stored in ISBN field to doi field
• removal of type (because "Article In Proceedings" is "@InProceedings")
• Removal of "series" (because senseless information)
• Removal of language = {English}, (maybe, we need a fix for languages in general)
• Removal of pages = {0--0},

Following need to be done, too; but how should JabRef know?

• Removal of institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},