Preliminary commit only to indent a big section of code.

Before we dropped amounts with quantity=0 and we stopped doing that because
it broke expand. However, there's still one case when such amount can be
ignored, i.e. when there's no base_application set on the amount generator.

When a user explicitely enters 0 on a Trade Model Line, total price must be 0
no matter what is set on the resource.

Default getPriceCalculationOperandDict script calls getPricingVariable
type-based script directly if variable_additional_price is not 0.

Redirect to absolute url of respective Web Section so if 'Renderer ID' is set (as usually when a web section is used for forum) the UI displays iforum UI which is not the case when default 'view' of Web Section is used if we redirect to using form_id.
As thread is show immediately correct message to not confuse users.

If an object has no uid yet and has no acquisition context to the portal,
getUid() fails.

Default is derived from id(aq_base(ob)) which is even more efficient.

The method on XMLObject was also redundant because it inherited the same one
from Base.

also readAsciiFile normilises CRLF/CR/LF.

https://www.dlitz.net/software/pycrypto/api/current/Crypto.Cipher.blockalgo-module.html#MODE_CFB

Accelerates (at least) Person's jump_to_accounting action.

Also, factorise related key string generation.

Also, use xrange as it's faster than range even for short sequences.

Also, get rid of single-use locals and unneeded list copy.

These related keys override auto-generated ones without adding any value.
Also, they are not declared as related keys, so declaration is
auto-generated and may not match ZSQLMethod parameters, causing errors.

Although it should never happen in normal use, it may happen during an
upgrade when property sheets fail creating accessors (ex: broken object
because portal type moved to a different Business Template).

Also, avoid reindexing when object is not modified.

This also fixes the problem that in recent pytz common_timezones is a LazyList that does not work in restricted python

make FTPConnector.getFile binary mode by default, because ascii mode only works with utf-8 encoding.

also propagate binary mode to SFTPClient.file().

Reverse natural ways, has suggested by the document (presentation) with
reference developer-Calendar