Transpose the aggregate constituents table

This way, it grows vertically rather than horizontally.  Horizontal
may be more "logical", but this is more practical.

src/root/static/css/hydra.css

@@ -91,3 +91,7 @@ div.news-item:not(:first-child) {
 td.nowrap {
     white-space: nowrap;
 }
+
+.override-link a {
+    color: inherit;
+}

src/root/static/css/rotated-th.css

@@ -0,0 +1,52 @@
+/* Rotated table headers, borrowed from http://jimmybonney.com/articles/column_header_rotation_css */
+
+.tab-content {
+    margin-right: 5em;
+    overflow: visible;
+}
+
+td.centered {
+    text-align: center;
+}
+
+.table-header-rotated th.rotate-45{
+    height: 80px;
+    width: 40px;
+    min-width: 40px;
+    max-width: 40px;
+    position: relative;
+    vertical-align: bottom;
+    padding: 0;
+    font-size: 100%;
+    line-height: 0.9;
+}
+
+.table-header-rotated th.rotate-45 > div {
+    position: relative;
+    top: 0px;
+    left: 40px; /* 80 * tan(45) / 2 = 40 where 80 is the height on the cell and 45 is the transform angle*/
+    height: 100%;
+    -ms-transform:skew(-45deg,0deg);
+    -moz-transform:skew(-45deg,0deg);
+    -webkit-transform:skew(-45deg,0deg);
+    -o-transform:skew(-45deg,0deg);
+    transform:skew(-45deg,0deg);
+    overflow: hidden;
+    border-left: 1px solid #dddddd;
+}
+
+.table-header-rotated th.rotate-45 span {
+    -ms-transform:skew(45deg,0deg) rotate(315deg);
+    -moz-transform:skew(45deg,0deg) rotate(315deg);
+    -webkit-transform:skew(45deg,0deg) rotate(315deg);
+    -o-transform:skew(45deg,0deg) rotate(315deg);
+    transform:skew(45deg,0deg) rotate(315deg);
+    position: absolute;
+    bottom: 30px; /* 40 cos(45) = 28 with an additional 2px margin*/
+    left: -25px; /*Because it looked good, but there is probably a mathematical link here as well*/
+    display: inline-block;
+    // width: 100%;
+    width: 85px; /* 80 / cos(45) - 40 cos (45) = 85 where 80 is the height of the cell, 40 the width of the cell and 45 the transform angle*/
+    text-align: left;
+    // white-space: nowrap; /*whether to display in one line or not*/
+}