feat: pomodoro UI + general changes

- Remove settingsitem line at end
- Convert more divs to settingsitem
- Pomodoro Settings
- Add more descriptions
- Changes loaders

Co-authored-by: David Ralph <me@davidcralph.co.uk>

src/components/modals/main/settings/Slider.jsx

@@ -63,7 +63,8 @@ export default class SliderComponent extends PureComponent {
       <>
         <span className={'sliderTitle'}>
           {this.props.title}
-          <span>{Number(this.state.value / 100)}x</span>
+          {/*<span>{Number(this.state.value / 100)}x</span>*/}
+          <span>{Number(this.state.value)}</span>
           <span className="link" onClick={this.resetItem}>
             <MdRefresh />
             {variables.language.getMessage(