i2psnark: Always verify file lengths at startup (ticket #1099)
TunnelPoolSettings:
 - Make dest hash final
 - Ensure allowZeroHop is always true for exploratory
minor optimization
log tweaks
Split routerconsole help into several files (no frontend change)

The old full-page translations of help.jsp are deprecated. The help text will
be tagged for translation on Transifex.
Transports:
 - Increase threshold for idle timeout reduction from 33% to 60%.
   This was reduced from 75% to 33% in -10 and it caused significant
   tunnel build problems, for reasons that aren't entirely clear.
 - Don't change the SSU idle timeout quicker when firewalled.
 - log tweaks
merge of '0af9bde8ae97c3b08f2c934236532121ce135817'
     and 'b324a96172089b549e53fb1c0c2a01807fe64699'