Theme updates

Console:
- light:
  - Lighten/tint buttons and dropdowns to better blend with reworked theme,
    vary text color for different button states
  - Increase vertical spacing for status/buttons in news section
  - Fix minor rendering issue with h1's (remove bottom border-radius)
  - Fix some mismatched heading coloring issues
  - Fix alignment issue on /configservice in Arabic/Chinese (ticket #2024)
  - Ensure spacing of sidebar elements is consistent in Chinese
- dark: Overhaul theme
- classic: Add fallback CSS to ensure browsers without CSS3 support can display
  icons on buttons (tested with Netsurf)

Proxy: Remove truncation of URLs in the error messages and handle with CSS to
  avoid UI breakage

I2PSnark
- Add button hoverstate for tracker details, torrent details and file icons
- light
  - Sync buttons in embedded mode with console theme
  - Fix non-functioning message log close icon
- dark: Overhaul theme and sync with console theme in embedded mode
- classic: refresh CSS

Susimail:
- Overhaul dark theme
- Sync theme to console theme by default, override if user sets theme
  (unless universal themeing is enabled)

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelHTTPClientBase.java

@@ -698,10 +698,8 @@ public abstract class I2PTunnelHTTPClientBase extends I2PTunnelClientBase implem
             out.write("<a href=\"");
             out.write(uri);
             out.write("\">");
-            if (targetRequest.length() > 80)
-                out.write(DataHelper.escapeHTML(targetRequest.substring(0, 75)) + "&hellip;");
-            else
-                out.write(uri);
+            // Long URLs are handled in CSS
+            out.write(uri);
             out.write("</a>");
             if (usingWWWProxy) {
                 out.write("<br><br><b>");