fix appraisals count not showing
hide appraisal qualification count
prefer accepting offers of least overloaded fellow
skip deprecated test

fixes #26

fixes #337

complements #336

fixes #336

add assignment deadline extension button for edadmin/authors

fixes #335

fixes #305

fixes #222

fixes #221

fixes #149

method also transfers comment vetting permissions

fixes #185

fixes #198

fixes #125

fixes #118

fixes #268

fixes #213