Improve admin page (add new projects)

style/_mask_admin.scss

@@ -1,9 +1,39 @@
-#feedback {
-	.error {
-		color: red;
+#admin {
+	margin: 1em;
+	
+	table {
+		margin-bottom: 1em;
+		border-collapse: collapse;
+		tr {
+			th {
+				background: #AAA;
+				color: white;
+				padding: 0.2rem 0.5rem;
+			}
+			td {
+				background: #EEE;
+				text-align: center;
+				padding: 0.2rem 0.5rem;
+				
+				input {
+					&[type="number"] {
+						width: 50px;
+					}
+					&[name="ref_feed_id"] {
+						width: 300px;
+					}
+				}
+			}
+		}
 	}
-
-	.success {
-		color: green;
+		
+	#feedback {
+		.error {
+			color: red;
+		}
+	
+		.success {
+			color: green;
+		}
 	}
 }