Add new deployment module and applies DRY to scripts.ci (closes #18)

Closes #18

See merge request !31

Do not set changeps1 to false as that affects deactivation of PS1 on bash

Closes #16

See merge request !30

[bootstrap] Do not set changeps1 to false as that affects deactivation of PS1 in hybrid environments (closes #16); Remove unused channels from default environment

Do not overwrite conda-build root dir if already configured

See merge request !25

The condarc file can contain the root-dir entry which state where
conda-build should run and store its artifacts. Don't set croot
if that setting is found.