Fix sync deadlock and filter notification

1.fix issue: deleting repo action will fall in deadlock between two Harbor if they are configured to sync to each other 2. Filter notification request in nginx

Update docs

Fix exposure issue when collecting logs

Update pagination of UI.

update docs of virtual appliance

Remove the workaround for DNS issue and escape special characters used in sed

Move self-registrition option to authentication group in installation guide

fix build issue

user guide for ova

fix build error

remove rsyslogd.pid before start to allow container restarts

This change mitigate problems with container restarts (stop, start) or automatic restart after host machine restart. Rsyslogd strictly checks existence of its pid file and won't start if such one exists.

remove timeout for replicating large image

Push photon to project library

ova dns

package the photon 1.0 image in offline.tgz

lvm guide

update license for 0.5.0

Log collection doc