Patch install guide for new Dev Portal (#623)
Patch install guide for new Dev Portal (#623)

* docs(ee) dev portal & misc

need ports exposed for Dev Portal functionality and misc cleanup

* docs(ee) more dev portal settings

* docs(ee) updates based on thoughtful reviewers' inputs made

also cleaned up postgres command which was ugly

* docs(ee) relative links and added var for version

more portable and cool this way

* docs(ee) fix markdown moustache syntax

{%%} -> {{}}

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