merge: Remove use of Sass (#116)

This pull request removes the dependency on Sass for the OpenDC web UI, by converting
the existing Sass files into CSS. With the recent updates of CSS, we have no use-case for
Sass anymore and sticking to CSS reduces the build infrastructure necessary.

## Implementation Notes :hammer_and_pick:

* Drop dependency on Sass 
* Update web dependencies to latest version

4 files changed, 12 insertions, 14 deletions

diff --git a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.js b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.js
index 5d9340b2..5aaa7834 100644
--- a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.js
+++ b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.js
@@ -14,7 +14,7 @@ import {
 } from '@patternfly/react-core'
 import { AngleLeftIcon } from '@patternfly/react-icons'
 import { useDispatch } from 'react-redux'
-import { backButton } from './TopologySidebar.module.scss'
+import { backButton } from './TopologySidebar.module.css'
 import RoomSidebar from './room/RoomSidebar'
 import RackSidebar from './rack/RackSidebar'
 import MachineSidebar from './machine/MachineSidebar'
diff --git a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.module.scss b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.module.css
index 45dc98da..3853c625 100644
--- a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.module.scss
+++ b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/TopologySidebar.module.css
@@ -20,18 +20,16 @@
  * SOFTWARE.
  */
 
-.backButton {
-    &:global(.pf-c-button) {
-        align-self: center;
-        --pf-c-button--after--BorderColor: var(--pf-global--BorderColor--light-100);
-        color: var(--pf-global--Color--400);
+.backButton:global(.pf-c-button) {
+    align-self: center;
+    --pf-c-button--after--BorderColor: var(--pf-global--BorderColor--light-100);
+    color: var(--pf-global--Color--400);
 
-        --pf-c-button--PaddingRight: var(--pf-global--spacer--sm);
-        --pf-c-button--PaddingLeft: var(--pf-global--spacer--sm);
+    --pf-c-button--PaddingRight: var(--pf-global--spacer--sm);
+    --pf-c-button--PaddingLeft: var(--pf-global--spacer--sm);
+}
 
-        &:hover,
-        &:focus {
-            --pf-c-button--after--BorderColor: var(--pf-global--BorderColor--100);
-        }
-    }
+.backButton:hover,
+.backButton:global(.pf-c-button):focus {
+    --pf-c-button--after--BorderColor: var(--pf-global--BorderColor--100);
 }
diff --git a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.js b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.js
index 8f6ff135..cb7d3b68 100644
--- a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.js
+++ b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.js
@@ -1,6 +1,6 @@
 import PropTypes from 'prop-types'
 import React from 'react'
-import { machineListContainer, sidebarContainer } from './RackSidebar.module.scss'
+import { machineListContainer, sidebarContainer } from './RackSidebar.module.css'
 import RackNameContainer from './RackNameContainer'
 import AddPrefab from './AddPrefab'
 import DeleteRackContainer from './DeleteRackContainer'
diff --git a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.module.scss b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.module.css
index f4c8829f..f4c8829f 100644
--- a/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.module.scss
+++ b/opendc-web/opendc-web-ui/src/components/topologies/sidebar/rack/RackSidebar.module.css