Information in validation/readme.txt should be moved into docs folder and transferred into md file

[vitek-rostislav]

What is happening

In packages/framework/src/Resources/scripts/common/validation/readme.txt (and duplicated in packages/framework/src/Resources/scripts/admin/validation/readme.txt) there are some useful information about the js validation but the file is lost among source code files.

Content of the files:

Client-side validation requires:
* subform must have HTML container with attribute id="{form_name}_{subform_name}" eg.: customer_deliveryAddressData
* collection of inputs or subforms must have HTML container with attribute id="{form_name}_{collection_name}" eg.: product_parameters
* when dynamically adding new collection item, this code must be added:
    Shopsys.validation.addNewItemToCollection('#{form_name}_{collection_name}', index);
* when dynamically removing new collection item, this code must be added:
  Shopsys.validation.removeItemFromCollection('#{form_name}_{collection_name}', index);

Expected result

The information about js validation are placed in md file in docs.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[pk16011990]

ping (prevent stale)

[stale[bot]]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[pk16011990]

stale bot, I'm patient...

[stale[bot]]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[grossmannmartin]

files are now in packages/framework/assets/js/admin/validation/readme.txt and packages/framework/assets/js/common/validation/readme.txt

[stale[bot]]

This issue has been automatically marked as stale because there was no activity within the last 4 months (and it is quite a long time). It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically closed because there was no acivity within the last half a year.