Normalize to standar file permissions

[maturanomx]

As a result of taking a look on PR #1967 I realized there is 819
executable files in this repository. It is obvious this is an error.

My PR is a:

💅 Enhancement

Main update on the:

Framework

[lauriejim]

I'm not sur to 💯% understand your PR and the update you did.
Can you details please. The file change is not understandable.

[maturanomx]

🤔 I not sure how to answer that... I will try explain it, sorry if I'm misunderstood the comment.

1. Unix systems have a file permissions system. There are 3 basic types: write, read and execution; and 3 type of access: owner, group and others.

2. Right now, with a clean clone from master all the listed files are executable. Let's take the file LICENSE.md in the directory root as example:
   

The actual permissions for that file -rwxr-xr-x are (or 775), meaning:

• Can been write (edited/deleted) by the owner (maturano) and users in the group maturano
• Can been read just by the owner and nobody else
• Can been execute by anybody

Mainly, two problems with the last one:

• It's not an executable file. Is not code, is just plain text.
• If were executable, anyone could run it
  
  (Error syntax because obviously is not valid code, but you can see how is trying to running it)

You can see in the image the user postgres is also able to execute the file. In a shared system (everyday less common, I know) this is a security risk. I took an invalid file, but if were a real executable...

This PR just change fix the file permissions. You can see the change in the side of the filename:

From 775 (or -rwxr-xr-x) to 664 (or -rw-r--r--), meaning:

• Anybody can read it
• Just the owner of the file can write it
• Nobody can execute it...
  

Hope this clarify the PR and why I created it. This is --basic?-- Unix and could be an open door for insecurity issues. These days with devops, virtualization, container, clouds and bla, bla, bla is less important dangerous, but doing our part in our side doesn't hurt 😉

---

... and yes, Windows doesn't have this file attributes and if you write/move a file from Windows to Unix it will put it as an executable and ... 😪

[lauriejim]

Really clear! Thank you @maturanomx

[lauriejim]

That is good to me @maturanomx , thank you for this PR.