[deps] Dropped Python 3.7 & reformatted openwisp.css

Author: pandafy

.github/workflows/ci.yml

@@ -28,9 +28,6 @@ jobs:
           - django~=3.2.0
           - django~=4.1.0
           - django~=4.2.0
-        include:
-          - django-version: django~=3.2.0
-            python-version: 3.7
 
     steps:
     - uses: actions/checkout@v2

openwisp_utils/admin_theme/static/admin/css/openwisp.css

@@ -296,17 +296,16 @@ The following CSS reverts those changes*/
   text-align: right;
   display: block;
 }
-
 #main .submit-row input {
-    margin: 0 0 5px 5px;
+  margin: 0 0 5px 5px;
 }
 #main .submit-row input.default {
-    margin: 0 0 5px 8px;
-    float: right;
+  margin: 0 0 5px 8px;
+  float: right;
 }
 .submit-row p.deletelink-box {
-    float: left;
-    margin: 0;
+  float: left;
+  margin: 0;
 }
 
 /* temporary frontend fix */

setup.py

@@ -46,9 +46,6 @@
         'django-compress-staticfiles~=1.0.1b',
         'django-admin-autocomplete-filter~=0.7.1',
         'swapper~=1.3.0',
-        # TODO: Remove when dropping support for Python 3.7
-        # For info, read https://stackoverflow.com/questions/73929564/
-        'importlib-metadata<5.0',
     ],
     extras_require={
         'qa': [