fix errors in settings, first check settings, the try connect.
cleanup database code
Merge branch 'master' of https://github.com/PecanProject/pecan
Revising the tree-ring code.

Converted the statistical modeling of the code from Clark et al 2007's R code into a JAGS model. Added a few small helper functions. Added a large example script that runs an analysis. Next need to refactor this code into discrete functions
added ciEnvelope function to visualization module to plot a confidence interval around an x-y plot (e.g. a timeseries)
Tree Rings

Moved JAGS code and exectution to its own function, InventoryGrowthFusion, as well as a helper function, parse.MatrixNames, which extracts the row and column info out of matrices output by JAGS