Updated all basic components

removed unnecessary components, combined where necessary
added each component to a folder, added individual css style modules
optimized some component rendering flows
removed functional components in favor of pure components
linted and formatted all of the files

app/javascript/gabsocial/components/icon_button/index.js

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+import classNames from 'classnames';
+import spring from 'react-motion/lib/spring';
+import Motion from '../../features/ui/util/optional_motion';
+import Icon from '../icon';
+
+import './index.scss';
+
+export default class IconButton extends PureComponent {
+
+  static propTypes = {
+    className: PropTypes.string,
+    title: PropTypes.string.isRequired,
+    icon: PropTypes.string.isRequired,
+    onClick: PropTypes.func,
+    size: PropTypes.number,
+    active: PropTypes.bool,
+    pressed: PropTypes.bool,
+    expanded: PropTypes.bool,
+    style: PropTypes.object,
+    disabled: PropTypes.bool,
+    inverted: PropTypes.bool,
+    animate: PropTypes.bool,
+    overlay: PropTypes.bool,
+    tabIndex: PropTypes.string,
+  };
+
+  static defaultProps = {
+    size: 18,
+    active: false,
+    disabled: false,
+    animate: false,
+    overlay: false,
+    tabIndex: '0',
+  };
+
+  handleClick = (e) =>  {
+    e.preventDefault();
+
+    if (!this.props.disabled) {
+      this.props.onClick(e);
+    }
+  }
+
+  render () {
+    const style = {
+      fontSize: `${this.props.size}px`,
+      width: `${this.props.size * 1.28571429}px`,
+      height: `${this.props.size * 1.28571429}px`,
+      lineHeight: `${this.props.size}px`,
+      ...this.props.style,
+    };
+
+    const {
+      active,
+      animate,
+      className,
+      disabled,
+      expanded,
+      icon,
+      inverted,
+      overlay,
+      pressed,
+      tabIndex,
+      title,
+    } = this.props;
+
+    const classes = classNames(className, 'icon-button', {
+      active,
+      disabled,
+      inverted,
+      overlayed: overlay,
+    });
+
+    // Perf optimization: avoid unnecessary <Motion> components unless we actually need to animate.
+    if (!animate) {
+      return (
+        <button
+          aria-label={title}
+          aria-pressed={pressed}
+          aria-expanded={expanded}
+          title={title}
+          className={classes}
+          onClick={this.handleClick}
+          style={style}
+          tabIndex={tabIndex}
+          disabled={disabled}
+        >
+          <Icon id={icon} fixedWidth aria-hidden='true' />
+        </button>
+      );
+    }
+
+    return (
+      <Motion defaultStyle={{ rotate: active ? -360 : 0 }} style={{ rotate: animate ? spring(active ? -360 : 0, { stiffness: 120, damping: 7 }) : 0 }}>
+        {({ rotate }) => (
+          <button
+            aria-label={title}
+            aria-pressed={pressed}
+            aria-expanded={expanded}
+            title={title}
+            className={classes}
+            onClick={this.handleClick}
+            style={style}
+            tabIndex={tabIndex}
+            disabled={disabled}
+          >
+            <Icon id={icon} style={{ transform: `rotate(${rotate}deg)` }} fixedWidth aria-hidden='true' />
+          </button>
+        )}
+      </Motion>
+    );
+  }
+
+}

app/javascript/gabsocial/components/icon_button/index.scss

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+.icon-button {
+  display: inline-block;
+  padding: 0;
+  color: $gab-secondary-text;
+  border: none;
+  background: transparent;
+  cursor: pointer;
+  transition: color 100ms ease-in;
+
+  &:hover,
+  &:active,
+  &:focus {
+    color: lighten($action-button-color, 7%);
+    transition: color 200ms ease-out;
+  }
+
+  &.disabled {
+    color: darken($action-button-color, 13%);
+    cursor: default;
+  }
+
+  &.active {
+    color: $highlight-text-color;
+  }
+
+  &::-moz-focus-inner {
+    border: 0;
+  }
+
+  &::-moz-focus-inner,
+  &:focus,
+  &:active {
+    outline: 0 !important;
+  }
+
+  &.inverted {
+    color: $gab-secondary-text;
+
+    &:hover,
+    &:active,
+    &:focus {
+      color: darken($lighter-text-color, 7%);
+    }
+
+    &.disabled {
+      color: lighten($lighter-text-color, 7%);
+    }
+
+    &.active {
+      color: $highlight-text-color;
+
+      &.disabled {
+        color: lighten($highlight-text-color, 13%);
+      }
+    }
+  }
+
+  &.overlayed {
+    box-sizing: content-box;
+    background: rgba($base-overlay-background, 0.6);
+    color: rgba($primary-text-color, 0.7);
+    border-radius: 4px;
+    padding: 2px;
+
+    &:hover {
+      background: rgba($base-overlay-background, 0.9);
+    }
+  }
+}