Increase memory

so that torrents stop when the router stops and restart when the router restarts.

- Use BWLimits from the DirMonitor as a periodic test that the router is there
- DirMonitor does not attempt to autostart torrents if BWLimits test fails
- DirMonitor does autostart existing torrents when BWLimits test passes again
- Register disconnect listener with socket manger and stop all torrents on disconnect
- Use stopTorrent(true) on router errors to prevent changing the persisted torrent running status
- Change autostart default to true for standalone

Possibly more todo for corner cases or other start/stop/fail scenarios.

Additional UI cleanup to follow

Logging:
 - Log to wrapper log after log manager shutdown (ticket #2725)
 - sync methods
Router:
 - Allow clients more time to get disconnect messages at shutdown (ticket #2725)
 - Don't delete router context at shutdown, to prevent a late
   creation of a new app context (ticket #2725)
 - Don't try to delete ping file on Android
javadocs

compile-tested only

Use Collator for case-insensitive sort
Use Exception.getLocalizedMessage()
Prevent duplicate torrent starts
Don't write debug info to wrapper log
Increase max piece size
Navbar cleanup

save torrent running status on torrent stop when autostart is enabled,
remove dup call to startTorrent()
(ticket #2120)

Add two HashMaps for faster dup checks

- Fix announce hosts of the form b64dest[.i2p]
- Add last activity stat
- Disallow illegal filenames on Windows
- cleanups and log tweaks

Prevent add/create/remove/delete
More handling of RuntimeException via Snark.fatal() in SnarkManager

i2psnark: Only rewrite torrent config file if changed (ticket #1893)
Util: Don't sync config writes on Android/ARM (ticket #1893)

when calculating global uploader limit, to allow more upload slots,
especially when some torrents are stalled.
Convert some shared fields to atomics for concurrency.

  - Consolidate default tunnel length definition
  - Increase max peers and uploaders per torrent
  - Increase default max total uploaders
  - Increase max peers sent and returned in DHT

reorder some logging
volatile

remove dup CSS item

- Fix NPE (#1615, h/t kytv)
- Fix start/stop status resumption on restart (#766, h/t backup)

Prevent double-save for now and auto start all torrents if autostart is already set (don't make the user restart each one).

Add creation date to created torrents
log tweaks
more test cases

 - Comment out command-line code
 - Clean up ID generation

 - Persist uploaded count (tickets #1034, #1298)
 - Show uploaded count even when stopped

   - Don't filter create torrent form, and
     fix exception on ':' in file names (ticket #1342)
   - Don't remap file names on torrents we created, and
     save remap setting in torrent config file (tickets #571, 771)
   - Escaping fixes since names may not be remapped
   - Use better encodePath() from Jetty
   - Don't say create torrent succeeded when it didn't
   - Add more sanity checks for torrent creation