Update documentation. 

- Use new saved samples
- Update expected output and images
- Be more consistent in argument order
- Extend references to other packages and literature
- Remove mentions of inconsistency models
- Merge mtc.network documentation (i.e. read/write)
Update documentation. 

- Use new saved samples
- Update expected output and images
- Be more consistent in argument order
- Extend references to other packages and literature
- Remove mentions of inconsistency models
- Merge mtc.network documentation (i.e. read/write)
Preserve treatment names in relative.effect, add unit tests
Reduce number of samples in example results

  - And update expected output for man pages accordingly
	- Update relative.effect test expected values
Import all of coda
Fix relative effect bugs with few variables (fix #629)
Properly check parameters before forest plot (fix #626)

 - Also automatically group on baseline in forest()
Fix pagination in blobbogram if group doesn't fit page

 * VERY hacky. Needs refactor.