[kissmanga/reader] Tooltips

[ewasion]

Info

Caused by the title attribute on #btnPrevious and #btnNext

Repro Steps

1. Hover over the previous/next links for a few seconds

Expected occurrence

Absolutely nothing.

Actual occurrence

A tooltip shows up.

Impact on user

The tooltip is an annoyance while you're reading and not moving your mouse.

Repro success-rate

100%

Browser(s) used/tested

Firefox Nightly 59.0a1

[ewasion]

Possible fix

Having an invisible flickering div on top.
Drawbacks: the previous/next buttons only work half of the time because you might click the flickering div.