when import function code replace some " with &quote

[miskoala]

Bug description
When importing function from database:
`CREATE OR REPLACE FUNCTION test(
)
RETURNS text
LANGUAGE 'sql'

AS $BODY$
select '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/">
<soapenv:Header xmlns:wsa="http://www.w3.org/2005/08/addressing">
<wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<wsse:UsernameToken wsu:Id="UsernameToken-C93872BE968FF53476157769365244928">
wsse:Username' || 'TERYT_USERNAME' || '</wsse:Username>
<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">'||'TERYT_PASSWORD'||'</wsse:Password>
</wsse:UsernameToken>
</wsse:Security>
wsa:Actionhttp://tempuri.org/ITerytWs1/PobierzDateAktualnegoKatSimc</wsa:Action></soapenv:Header>
soapenv:Body
tem:PobierzDateAktualnegoKatSimc/
</soapenv:Body></soapenv:Envelope>'
as test;
$BODY$;
`

Some quote characters are replaced with: " string.

How to reproduce

1. create above function in database
2. import this function to pgmoddeler model,
3. some " chars are replaced by &quote;
4. export function to database - function works differently.

Expected behavior
import and export should not change the function code

Info about your desktop

• OS: OpenSuse 15.1
• PostgreSQL Version: 12.1
• Window manager: XFCE
• pgModeler version: 0.9.2
• Qt version: 5.9.7