Command line flag and REST command to reset and resync (fixes #85)

Still needs implemention in GUI
discosrv: Refactor handler loop
discosrv: Source based rate limiting
discosrv: Remove duplicate logging of limiter cache entries
Remove followSymlinks option (ref #92)
Remove deprected .ini format reader
Configuration version 2 (nodes separate from repos)
Merge branch 'master' into nui

* master:
  Configuration version 2 (nodes separate from repos)
  Remove deprected .ini format reader
  Remove followSymlinks option (ref #92)
  discosrv: Remove duplicate logging of limiter cache entries
  discosrv: Source based rate limiting
  discosrv: Refactor handler loop
  Command line flag and REST command to reset and resync (fixes #85)

Conflicts:
	cmd/syncthing/config.go
wip