what are the thing we can customize in portal-ext.properties file

##
## Company
##

#
# This sets the default web id. Omniadmin users must belong to the company
# with this web id.
#
company.default.web.id=liferay.com

#
# The portal can authenticate users based on their email address, screen
# name, or user id.
#
company.security.auth.type=emailAddress
#company.security.auth.type=screenName
#company.security.auth.type=userId

#
# Set this to true to ensure users login with https.
#
company.security.auth.requires.https=false

#
# Set the following to true to allow users to select the "remember me"
# feature to automatically login to the portal.
#
company.security.auto.login=true

#
# Set the following to the maximum age (in number of seconds) of the browser
# cookie that enables the "remember me" feature. A value of 31536000
# signifies a lifespan of one year. A value of -1 signifies a lifespan of a
# browser session.
#
# Rather than setting this to 0, set the property
# "company.security.auto.login" to false to disable the "remember me"
# feature.
#
company.security.auto.login.max.age=31536000

#
# Set the following to true to allow users to ask the portal to send them
# their password.
#
company.security.send.password=true

#
# Set the following to true to allow strangers to create accounts and
# register themselves on the portal.
#
company.security.strangers=true

#
# Set the following to true if strangers can create accounts with email
# addresses that match the company mail suffix. This property is not used
# unless "company.security.strangers" is also set to true.
#
company.security.strangers.with.mx=true

#
# Set the following to true if strangers who create accounts need to be
# verified via email.
#
company.security.strangers.verify=false

#
# Set the following to true to allow community administrators to use their
# own logo instead of the enterprise logo.
#
company.security.community.logo=true