Mnl questions

Mnl answers

• Change background colour of knitr::kable headers
• how to close resultset in RMySQL?
• In RStudio, `knit` always works, but `rmarkdown::render` fails on second run (but not first!)
• Source function in R, error cannot find file - do I have to change working directory?
• Wrapping footnote to second line to fit table in kable (LaTeX .Rmd)