Truncate repo name if needed

If repo name is longer than what fits on card in manage repos view,
truncate it. Untested.

Fixes: #116

src/less/style.less

@@ -258,6 +258,9 @@
     color: #42505c;
     font-family: "PostGrotesk-Medium";
     font-size: 18px;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
     a { color: #42505c; }
 }