Add loan tables

Add two views for loans :
- inventory:ongoing_loans
- inventory:all_loans (permission inventory.can_see_loan_details required)

website/scss/style.scss

@@ -31,7 +31,6 @@ body {
 }
 
 main {
-    max-width: $page_width;
     width: 100%;
     padding: 20px 40px;
     margin: 0 auto 50px;
@@ -48,6 +47,10 @@ main {
     }
 }
 
+main:not(.wide-main){
+	max-width: $page_width;
+}
+
 footer {
     background-color: $footer_bg_color;
     font-size: 0.7em;
@@ -153,6 +156,24 @@ table {
     th {
         border-bottom-width: 2px;
     }
+
+	th.asc::before {
+		display: inline;
+		font-family: FontAwesome;
+		content: '\f0de'; // Sort up symbol
+	}
+
+	th.desc::before {
+		display: inline;
+		font-family: FontAwesome;
+		content: '\f0dd'; // Sort down symbol
+	}
+
+	th.orderable:not(.asc, .desc)::before {
+		display: inline;
+		font-family: FontAwesome;
+		content: '\f0dc'; // Sort up/down symbol
+	}
 }
 
 iframe {