clean up BuildCT

[oschulte]

• Bypass BayesBaseCT_SortMerge.java.

• Make stand-alone copy of CTGenerator
• In RunBB, call CTGenerator, not BayesBaseCT_SortMerge.java.

• Clean up metadata_2 script
  • rename as metaqueries
  • move metadata creation to front (e.g. RnodesPVars), or separate script
  • rename rchain.sql to MoebiusJoin

• merge metaqueries with and without ADPVariables
• move BN part modelmanager.sql from BuildCT to BBRunner or BBLearner (e.g. PathBayesNets)
• create view for final output (maximal Rchain length) introduce view for output #41

• Reclaim rnid column (see reclaim rnid from Lattice Generator #43)

• replace rnid by short_rnid column in lattice generator

• Improve usability of CT generator

• make readme for stand-alone use of CT generator without BB learning
• drop superfluous tables in CT generator (see drop temporary CT tables #28 )
• drop superfluous tables in BB learner (see drop temporary CT tables #28)

• Use only one DB for learning, e.g. _BN, put CT tables there?