Console: Fix NPE on /profiles

Profiles:
  - Fix first heard about to be earliest, undeprecate
  - Fixup first heard about at profile readin
  - Persist good/bad lookup/store DBHistory stats added in 0.7.8
  - Remove unused DBHistory methods and fields to save memory
  - Change bonus longs to ints to save memory
  - Extend profile expiration time from 3 days to 15
  - Consolidate getLong()
  - Synch fixes
Sybil tool: Tweaks and enhancements

apps/routerconsole/java/src/net/i2p/router/web/ProfileOrganizerRenderer.java

@@ -48,6 +48,8 @@ class ProfileOrganizerRenderer {
         for (Hash peer : peers) {
             if (_organizer.getUs().equals(peer)) continue;
             PeerProfile prof = _organizer.getProfile(peer);
+            if (prof == null)
+                continue;
             if (mode == 2) {
                 RouterInfo info = _context.netDb().lookupRouterInfoLocally(peer);
                 if (info != null && info.getCapabilities().indexOf("f") >= 0)