Add additional advanced config settings to webgui.
New params:
FOLDER_RESCAN_INTERVAL="600"
MAX_FILE_SIZE_DIFF_FOR_PATCHING="1000"
MAX_FILE_SIZE_FOR_VERSIONING="1000"
SYNC_MAX_TIME_DIFF="600"
SYNC_TRASH_TTL="30"
SEND_BUF_SIZE="5"
RECV_BUF_SIZE="5"
Increment Plugin Version to 1.8