[Improvement] Allow bigger files for upload for users profile picture

[mprajescu]

Where can you allow larger files to be uploaded? Cannot add profile pictures for users more than 2 mb.

[mgogoulos]

I've slightly changed the title, because this only refers to user image. This is 2mb now indeed but it could be another configuration option

[swiftugandan]

Good first issue for anyone wanting to contribute,

mediacms/users/forms.py

Line 32 in 87539eb

if image.size > 2 * 1024 * 1024:

@mgogoulos What max size should we allow?

[mgogoulos]

2MB limit for user profile is set, since the image gets re scaled anyway on 200x200 (check users.models.User.logo)
at some point it would be handy to add option to select a section from an uploaded image, but that's a different issue.

For this one here, indeed a check could be towards a variable set on cms/settings.py (eg USER_PROFILE_PICTURE_SIZE), which would have the default 2MB limit but make it easy for users to override (nice suggestion @swiftugandan !)