[Frontend] Styles for tabular views and view sections

Original issue: https://github.jpl.nasa.gov/MissionControl/vista/issues/30

New CSS and symbols to support tabular views;
Required by JPL branch vista30 (https://github.jpl.nasa.gov/MissionControl/vista/tree/vista30)

platform/commonUI/general/res/sass/helpers/_wait-spinner.scss

@@ -50,6 +50,12 @@
 	margin-top: $d / -1;
 	margin-left: $d / -1;
 	z-index: 2;
+	&.inline {
+		display: inline-block !important;
+		margin-right: $interiorMargin;
+		position: relative !important;
+		vertical-align: middle;
+	}
 }
 
 .l-wait-spinner-holder {
@@ -80,4 +86,14 @@
 	margin: 0 !important;
 	padding: 0 !important;
 	top: 2px; left: 0;
+}
+
+.wait-spinner.sm {
+	$d: 13px;
+	@include wait-spinner(0.25em, $colorKey);
+	height: $d; width: $d;
+	margin-left: 0 !important;
+	margin-top: 0 !important;
+	padding: 0 !important;
+	top: 0; left: 0;
 }