feat(web): better tooltips and uniformity (#474)

* - fix: changed all {text,bg}-{teal,indigo}-* color properties to {text,bg}-{blue}-* so there is only one dominant primary color in the UI -- blue
- enhancement: added `cursor: pointer` to the PageButton component (used in pagination)
- enhancement: modified TitleCell to use the new Tooltip component and modified the width selectors to a more sane default value, now instead of scrolling one just has to tap the cell to see it's untruncated value
- enhancement: modified the Tooltip component to use react-popper-tooltip (which in turn uses popper.js) which is a much better alternative, since it uses auto-positioning in case there's not enough space and some things aren't as broken as in the previous version (e.g. there was a problem with forcing the previous tooltip to use a specific width)
- enhancement: added a useMedia hook selector from the react-use repository, which might come in handy in the future for better/easier decoupling of Desktop and Mobile UI/UX patterns via JS (versus CSS-only)
- enhancement: made the mobile navbar more visible and clear. also fixed previous path === "/" bug which was fixed on desktop.
- fix: fixed table headers/footers so they're rounded
- enhancement: made pagination components more compact (buttons and show N result selector)

* changed {ring, border}-indigo-* to ring-blue-*

* build: add yarn.lock

* fix: formatting warnings

* fix: formatting warnings

* fix: more formatting warnings

* fix: more formatting

web/src/screens/settings/Irc.tsx

@@ -50,7 +50,7 @@ export const IrcSettings = () => {
             <button
               type="button"
               onClick={toggleAddNetwork}
-              className="relative inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 dark:bg-blue-600 hover:bg-indigo-700 dark:hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
+              className="relative inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-blue-600 dark:bg-blue-600 hover:bg-blue-700 dark:hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
             >
               Add new
             </button>