added config editor (closes #19)

src/less/popup.less

@@ -29,15 +29,17 @@
 		transform: translate(-50%, -50%);
 		box-sizing: border-box;
 
-		max-width: 50vw;
-		max-height: 50vh;
-
 		padding: 2rem;
 		display: flex;
 		flex-direction: column;
 
 		font-size: 1.4rem;
 
+		&.large {
+			width: 80vw;
+			height: 80vh;
+		}
+
 		& > section {
 			margin: 1rem;
 
@@ -45,6 +47,7 @@
 				display: flex;
 				flex-direction: column;
 				align-items: center;
+				overflow-y: auto;
 
 				& > * {
 					margin: .5rem;
@@ -82,6 +85,9 @@
 				flex: 1;
 			}
 		}
+		label {
+			margin-right: 1ex;
+		}
 
 		button {
 			display: inline;