Shopsys: composer.json - use patches instead of forks

[MattCzerner]

What is happening

Using forks as dependency in composer.json is very slow and maybe even cause need to authenticate yourself on github

Expected result

Use patches instead.

[TomasVotruba]

I was about to write similar issue into "stable requirements". Temp commit-locks like these are fine for development

https://github.com/shopsys/shopsys/blob/6d6772f34ef4cab096c6029141b22428859836a0/composer.json#L97

https://github.com/shopsys/shopsys/blob/6d6772f34ef4cab096c6029141b22428859836a0/composer.json#L108

https://github.com/shopsys/shopsys/blob/6d6772f34ef4cab096c6029141b22428859836a0/composer.json#L142

But they make install time into insanse times and causes bugs like https://github.com/TomasVotruba/shopsys-spryker-and-sylius-analysis/pull/16#issue-209768449

E.g. this package https://github.com/ddmaster/PostgreSearchBundle is just 5 files that can be easily integrated to Shopsys core.

There is also another hacky solution - patches - https://pehapkari.cz/blog/2017/01/20/jak-snadno-a-rychle-upravovat-soubory-ve-vendoru/ but it can be broken the same way conflicts break merges. I prefer fast and safe approach and use own code or stable version.

[PetrHeinz]

The patches were a pretty unstable solution, the Composer installation was sped up using proper package forking instead (by publishing the fork on Packagist and using Composer replace config, see #490).