Revert "[ticket/265] Use 644 permissions for files"

This reverts commit d6395878bc821a219e3dfd254c4a258050cba884.
Merge pull request #267 from marc1706/fix/tests

Revert "[ticket/265] Use 644 permissions for files"
[ticket/265] Remove execute flag from files that don't need it

B3P-265
Merge pull request #268 from marc1706/ticket/265

[ticket/265] Remove execute flag from files that don't need it