Fix Linux UI bugs

chrome/content/zotero/components/button.jsx

@@ -74,9 +74,6 @@ class Button extends PureComponent {
 	}
 	
 	get menuMarker() {
-		if (!Zotero.isNode && Zotero.isLinux) {
-			return this.props.isMenu && <span className="menu-marker"/>
-		}
 		return this.props.isMenu && <CSSIcon name="chevron-6" className="menu-marker icon-8"/>
 	}
 

chrome/content/zotero/components/virtualized-table.jsx

@@ -1142,12 +1142,8 @@ class VirtualizedTable extends React.Component {
 			}
 			let sortIndicator = "";
 			if (!column.iconLabel && column.sortDirection) {
-				if (!Zotero.isNode && Zotero.isLinux) {
-					sortIndicator = <span className={"sort-indicator " + (column.sortDirection === 1 ? "ascending" : "descending")}/>;
-				} else {
 				sortIndicator = <CSSIcon name="sort-indicator" className={"icon-8 sort-indicator " + (column.sortDirection === 1 ? "ascending" : "descending")} />;
 			}
-			}
 			const className = cx("cell", column.className, { 'first-column': index === 0, dragging: this.state.draggingColumn == index },
 				{ "cell-icon": !!column.iconLabel });
 			return (<Draggable

scss/components/_button.scss

@@ -10,7 +10,7 @@
 	line-height: inherit;
 	color: inherit;
 	text-align: center;
-	-moz-appearance: toolbarbutton;
+	-moz-appearance: none;
 
 	&[disabled],
 	&.disabled {
@@ -25,7 +25,7 @@
 		}
 	}
 	span.menu-marker {
-		-moz-appearance: toolbarbutton-dropdown;
+		-moz-appearance: none;
 		display: inline-block;
 		margin-left: 4px;
 	}

scss/linux/_about.scss

@@ -1,4 +0,0 @@
-#aboutcontent
-{
-	color: #3e3e3e;
-}

scss/linux/elements/_noteEditor.scss

@@ -1,10 +0,0 @@
-tags-box, related-box {
-	color: Text;
-	background: Background;
-}
-
-#related-popup, #tags-popup {
-	--panel-color: Text;
-	--panel-background: transparent;
-	--panel-border-color: InactiveBorder
-}

scss/mac/_button.scss

@@ -1,11 +0,0 @@
-//
-// Button
-// --------------------------------------------------
-
-.btn {
-  -moz-appearance: none;
-  
-  span.menu-marker {
-    -moz-appearance: none;
-  }
-}

scss/zotero-mac.scss

@@ -4,7 +4,6 @@
 // MacOS specific
 // --------------------------------------------------
 
-@import "mac/button";
 @import "mac/createParent";
 @import "mac/editable";
 @import "mac/tabBar";

scss/zotero-unix.scss

@@ -4,7 +4,6 @@
 // Linux specific
 // --------------------------------------------------
 
-@import "linux/about";
 @import "linux/createParent";
 @import "linux/editable";
 @import "linux/errorReport";
@@ -16,4 +15,3 @@
 // Elements
 
 @import "linux/elements/itemBox";
-@import "linux/elements/noteEditor";