minor edits to comparative tutorial -- default value added to # dfs of inverse wishart distribution
minor edits to comparative tutorial tex document
little traces removed from placentaliaDatesTraitsClock.Rev script
updated paths indicated in tutorial document
Several recent updates, including memory issues, tutorials, descriptions, GUI, ...
Merge branch 'development' of https://github.com/revbayes/revbayes into development

Conflicts:
	tutorials/test_tutorials.sh
manual cleaning up
Merge branch 'language-edit' of https://github.com/revbayes/revbayes into development

Conflicts:
	tutorials/RB_PhyloComparative_Tutorial/RevBayes_scripts/placentaliaMass.Rev
Compiler issue caused by inconsistent commits.