by the distribution package manager

Use 'command -v' to know if an executable is present in the PATH
There is an error with 'rustup' not found, but that's fine

Move 'then' keywords after the condition for better readability
Remove useless directory change at the end of the script
Move "cd neon" close to the related build calls

[fix] #1414 desktop variant must not need system nodejs

See merge request !1321

[fix] cli: add missing options in bash completion

See merge request !1319

[fix] wotb upgrade: force to reset data

See merge request !1318

[fix] async dep upgrade break wizard network

See merge request !1317

[fix] execute wizard tasks

See merge request !1316

auto install rust

See merge request !1315

Ci/regex

See merge request !1314