pipeline multiple updates

See merge request !9

pipeline multiple updates

See merge request !8

pipeline multiple updates

See merge request !7

pipeline multiple updates

See merge request !6

pipeline multiple updates

See merge request !5

pipeline multiple updates

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pipeline multiple updates

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pipeline multiple updates

See merge request !2

* app's frontend and backend are combined and served together from Node.js

* add code block to demonstrate build process in a more readable way
  (other than the Makefile)
* emphasise the sensitivity of the JWT token

* NodeJS: v16
* NPM: v8
* Jest: v27
* Mongoose: v6

And fix some small issues along the way

APP_NODE_MODULE_DIRS contains two paths. Quoting that var breaks
the command and the node_module folders were not deleted.

* remove 'renders a todo add' test since it was a) the wrong place
  and b) already implemented by PR #36
* fix indentation and make sure that there is actually a user that
  the test tries to delete

* bump NPM from v6 to v7
* regenerated package lock files
* bump Node from v12 to v14

* changed the way how the paths of makefile and .local folder are determined
* removed failsafe and replaced it with quoted path variables

The function `dir`, used to determine MKFILE_DIR can take multiple
parameters. As a result, if this repository is located in a path
that contains a white space, the result of `abspath` is interpreted
as multiple parameters, because Make uses white spaces as separator
or delimiter. Quoting does not help. Spaces as such only work in
shell commands within target bodies.

So, the chosen workaround is to add a failsafe to ask the user for
confirmation to give them a chance to double check what is actually
being deleted.

* added a warning at the top of the readme to raise awareness