Add tooltips to browser bar UI

[JadeMaveric]

I tried to make the UI as intuitive as possible, and did initially add tooltips to the input labels. But my CSS skills aren't the best, and it messed up the layout.

I suppose this should be something fairly simple to anyone with frontend experience. Either to fix the CSS, or switch to using the title attribute (and removing the unnecessary CSS)

A suitable PR would add tooltips to the keywords and interval label documenting what they do.

[ameybh]

Hi. The keyword textarea already has a description. Do you want to remove that and add a tooltip or something else(like a placeholder)?

[ilkerunal]

Could you please assign this to me ?

[JadeMaveric]

@ameybhavsar24 You can leave the text in the textarea tag. It'll only show up on first use once #3 is implemented. But you can reuse the same text in the popup. Or use a summarized form of the description given in README.md

@ilkerunal Sorry, I'm going to assign on an FCFS basis