set proper permissions on all files (was ACTS-87)

Original author Christian Gumpert @cgumpert

Some files seem to have weird permissions. So far we only have regular files and directories in our repository. The permissions should be:

files: -rw-r--r-- (so all read, owner can write) directories: drwxr-xr-x (so all read and access, owner can write)

Edited Mar 27, 2019 by Moritz Kiehn

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information