Fix timeline date coercion, styling, add external/empty href styling

icons/extlink.svg

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Creator: CorelDRAW X5 -->
+<svg
+    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+    xmlns="http://www.w3.org/2000/svg"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:ns1="http://sozi.baierouge.fr"
+    xmlns:cc="http://web.resource.org/cc/"
+    xmlns:xlink="http://www.w3.org/1999/xlink"
+    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+    style="fill-rule:evenodd;text-rendering:geometricPrecision;image-rendering:optimizeQuality;clip-rule:evenodd;shape-rendering:geometricPrecision"
+    xml:space="preserve"
+    viewBox="0 0 1395 1395"
+  >
+ <defs
+    >
+  <style
+        type="text/css"
+      >
+    .fil0 {fill:black;fill-rule:nonzero}
+  </style
+    >
+ </defs
+  >
+ <g
+      id="Layer_x0020_1"
+    >
+  <path
+        class="fil0"
+        d="m848 995v-447h-549l157 157c21 21 21 54 0 75l-327 327 161 161 327-327c21-21 54-21 75 0l157 157v-102zm-442-553v-389c0-29 24-53 53-53h884c29 0 53 24 53 53v1172c0 29-24 53-53 53h-884c-9 0-17-2-24-6l-108 108c-21 21-54 21-75 0l-236-236c-21-21-21-54 0-75l327-327-210-210c-33-33-10-90 37-90h235zm106 0h405c13 4 23 15 30 26h206c70 0 70 106 0 106h-199v128h199c70 0 70 106 0 106h-199v128h199c70 0 70 106 0 106h-199v128h336v-1066h-778v336zm23 729h238l-119-119-119 119zm115-831c-70 0-70-106 0-106h503c70 0 70 106 0 106h-503z"
+    />
+ </g
+  >
+<metadata
+    ><rdf:RDF
+      ><cc:Work
+        ><dc:format
+          >image/svg+xml</dc:format
+        ><dc:type
+            rdf:resource="http://purl.org/dc/dcmitype/StillImage"
+        /><cc:license
+            rdf:resource="http://creativecommons.org/licenses/publicdomain/"
+        /><dc:publisher
+          ><cc:Agent
+              rdf:about="http://openclipart.org/"
+            ><dc:title
+              >Openclipart</dc:title
+            ></cc:Agent
+          ></dc:publisher
+        ></cc:Work
+      ><cc:License
+          rdf:about="http://creativecommons.org/licenses/publicdomain/"
+        ><cc:permits
+            rdf:resource="http://creativecommons.org/ns#Reproduction"
+        /><cc:permits
+            rdf:resource="http://creativecommons.org/ns#Distribution"
+        /><cc:permits
+            rdf:resource="http://creativecommons.org/ns#DerivativeWorks"
+        /></cc:License
+      ></rdf:RDF
+    ></metadata
+  ></svg
+>