Fixing falsey bug for when settings.orderby == false

[jonathan-shahen]

This pull request solves the issues: #1115, #1119, and #1118

The problem was when settings.orderby == false, it would cause the old inline if statement to become false and thus set the orderby value to the default true.

Link to description of the falsey issue (https://stackoverflow.com/questions/3390396/how-to-check-for-undefined-in-javascript).

The other commit adds the suggested fixes to the README.

[uggrock]

Thanks for the fix and the pull request. In order to accept it, we need that you agree first to our Contributor License Agreement available here: https://www.tagspaces.org/contribute/

[uggrock]

Looks good to me

[jonathan-shahen]

I am willing to sign the Contributor License Agreement, and provide my name, email, and github id; but I am not comfortable providing my mailing address, country, and phone number.

How can we proceed?

[uggrock]

Please download, print and fill our this PDF, with the information you are comfortable with.
https://www.tagspaces.org/content/tagspaces-cla-v1.pdf
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