now repodeps fxn ignores manipulate, rstudio, and packrat pkgs in case user in rstudio project
fixed fxns that query mran metadata for new paths
with checkuserinstall() fxn now ignoring packrat, rstudio, manipulate pkgs in case user in RStudio project
updated rsync command from ::MRAN-snapshots to ::MRAN-src-snapshots
fixed spelling error of install.packages