Add total page count and some styling

Displaying the total page count near the current page number means we can lose the bottom right toolbar entirely (the renderer could be added to top toolbar, or just left for the metadata info in title bar).

client/homebrew/brewRenderer/toolBar/toolBar.jsx

@@ -87,6 +87,8 @@ const ToolBar = ({ onZoomChange, currentPage, onPageChange, totalPages })=>{
 				onBlur={()=>onPageChange(pageInput)}
 			/>
 
+			<span id='page-count'>/ {totalPages}</span>
+
 			<div className='tool'>
 				<button
 					className='nextPage'

client/homebrew/brewRenderer/toolBar/toolBar.less

@@ -52,6 +52,12 @@
 				transform        : translate(-50%, 50%);
 			}
 		}
+
+		&#pageInput {
+			width: 4ch;
+			text-align: center;
+		}
+
 	}
 
 	.tool {