UI feedback

Console:
- Increase contrast of table rows on profile/tunnels/peers tables
- Changed pink font to magenta in /logs to increase legibility
- Soften H3 headings in sidebar
- Single click to select I2P Version and Running Environment table text, with
  table:hover color change and text cursor to better reflect selection
  - Modify text above to indicate what exactly needs to be included in logs
- Reduce size of monospace dests in peers/profiles/tunnels, add additional
  spacing (responsive)
- Fix resizing of sidebar reseed button
- De-emphasise siderbar app icons with background-blend-mode: luminosity
- Change sidebar snark icon to match homepage icon
- Bump div.main text color from #222 to #333 (reduce contrast)

i2ptunnel: Increase vertical spacing of H2/H3's

SusiDNS: Change address helper icon to add book icon

i2psnark:
- Remove font-adjust-size (ubergine/vanilla)
  - Was probably causing the navbar links to display too large on some setups
- Add extra spacing to screenlogger bullets (ubergine)

apps/routerconsole/jsp/logs.jsp

@@ -14,7 +14,7 @@
 
 <table id="bugreports"><tbody>
   <tr><td class="infohelp">
-<%=intl._t("Please include this information in bug reports")%>.
+<%=intl._t("Please include your I2P version and running environment information in bug reports")%>.
 <%=intl._t("Note that system information, log timestamps, and log messages may provide clues to your location; please review everything you include in a bug report.")%>
 <% /* note to translators - both parameters are URLs */
 %><%=intl._t("Please report bugs on {0} or {1}.",