Work in Progress: install issues

[sjanssen2]

I am here collecting issues I have with installing our software:

1. sh: 1: /bin/gtar: not found, solution: Sys.setenv(TAR = "/bin/tar")
2. for the APP: Error in projectsTabUI("projTab") : could not find function "projectsTabUI", solution: switch from R 3.6.1 to R 4.1.1 and install in a fresh conda env like

conda create -n flowsofine_4 -c conda-forge r-essentials r-base=4 r-gert libprotobuf -y 
conda install -c bioconda bioconductor-rprotobuflib  
conda activate flowsofine_4
R
	install.packages("devtools")
	library("devtools")
	devtools::install_git("/Daten/Git/JonasKup/FlowSoFine")
	devtools::install_git("/Daten/Git/JonasKup/FlowSoFineApp")

3. Error in utils::browseURL(appUrl) : 'browser' must be a non-empty character string, solution: options(browser="/usr/bin/firefox")
4. missing icons:

This Font Awesome icon ('gear') does not exist:
* if providing a custom `html_dependency` these `name` checks can 
  be deactivated with `verify_fa = FALSE