fix: z-indexes of top menu, dropdown and subnavs

[MMFernando]

Changed z-indexes so that the elements are properly placed and the dropdown menu gets closed when the user scrolls so it doesn't become unreachable on Rapid Router's page.

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This change is 

[faucomte97]

Reviewed 4 of 4 files at r1.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @mariaFernando)

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portal/templates/portal/base.html, line 363 at r1 (raw file):

    $(window).on('scroll', function() {
        var scroll = $(window).scrollTop();
        if ((scroll > 0) && ($('.dropdown').hasClass('open'))) {

I think you can have the if without the inner brackets around scroll > 0 and the other condition

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portal/templates/portal/base.html, line 365 at r1 (raw file):

        if ((scroll > 0) && ($('.dropdown').hasClass('open'))) {
            $('.dropdown').removeClass('open');
            $('.button--dropdown').attr("aria-expanded","false");

Space between the comma and "false"

[MMFernando]

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portal/templates/portal/base.html, line 365 at r1 (raw file):

Previously, faucomte97 (Florian Aucomte) wrote…

Space between the comma and "false"

There is actually no space there x)

[faucomte97]

Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @mariaFernando)

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portal/templates/portal/base.html, line 365 at r1 (raw file):

Previously, mariaFernando (Maria Mafalda Fernando) wrote…

There is actually no space there x)

I know, I'm asking you to put one in xD

[faucomte97]

Reviewed 1 of 1 files at r2.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @mariaFernando)

[MMFernando]

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portal/templates/portal/base.html, line 365 at r1 (raw file):

Previously, faucomte97 (Florian Aucomte) wrote…

I know, I'm asking you to put one in xD

ohhOOOHHH

[faucomte97]

Reviewed 1 of 1 files at r3.
Reviewable status: complete! all files reviewed, all discussions resolved

[MMFernando]

Reviewable status: complete! all files reviewed, all discussions resolved

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portal/templates/portal/base.html, line 365 at r1 (raw file):

Previously, mariaFernando (Maria Mafalda Fernando) wrote…

ohhOOOHHH

Done.