MDL-62234 Theme boost: Improve atto dialogue styling

theme/bootstrapbase/less/moodle/bs4-compat.less

@@ -25,6 +25,9 @@
 
 
 // Due to lessphp limitations, the following classes must be declared statically without use of a loop.
+.p-0 {
+    padding: 0 !important;
+}
 .p-l-1 {
     padding-left: 1 * @baseFontSize !important;
 }
@@ -49,6 +52,10 @@
     padding: 1 * @baseFontSize !important;
 }
 
+.m-0 {
+    margin: 0 !important;
+}
+
 .m-l-1 {
     margin-left: 1 * @baseFontSize !important;
 }
@@ -301,3 +308,7 @@
 .bg-faded {
     background-color: @grayLighter;
 }
+
+.w-100 {
+    width: 100%;
+}

theme/bootstrapbase/less/moodle/forms.less

@@ -162,7 +162,9 @@ form {
 #page-mod-forum-search .c1 {
     .form-horizontal .controls
 }
-
+.form-inline label:not(.sr-only):not(.accesshide) + select {
+    margin-left: 0.5rem;
+}
 
 .formsettingheading {
     .form-horizontal .help-block

theme/bootstrapbase/style/moodle.css

@@ -16726,6 +16726,9 @@ form {
 #page-mod-forum-search .c1:first-child {
   *padding-left: 200px;
 }
+.form-inline label:not(.sr-only):not(.accesshide) + select {
+  margin-left: 0.5rem;
+}
 .formsettingheading {
   margin-bottom: 0;
 }
@@ -21836,6 +21839,9 @@ ul.indented-list {
 .card-block {
   padding: 1.25rem;
 }
+.p-0 {
+  padding: 0 !important;
+}
 .p-l-1 {
   padding-left: 14px !important;
 }
@@ -21859,6 +21865,9 @@ ul.indented-list {
 .p-a-1 {
   padding: 14px !important;
 }
+.m-0 {
+  margin: 0 !important;
+}
 .m-l-1 {
   margin-left: 14px !important;
 }
@@ -22066,3 +22075,6 @@ ul.indented-list {
 .bg-faded {
   background-color: #eee;
 }
+.w-100 {
+  width: 100%;
+}