Fix user's creating root elements (like Databases)

[Edward-Upton]

Currently, any element that is made without a parent defaults to having Admin privileges across the board. This means when a user tries to create a database, they will not be authorized to, and even if they do they won't be able to modify the DB.

Possible solutions here are:

• Root elements are made with the same permissions as the creator (since inheriting permissions from a parent is not possible).
• Set up default permissions for different element types, for example, a rule saying a database inherits permissions from a user (like above).

[Edward-Upton]

For now, I will add a fix in createElement that allows any user (must be logged in) to create specifically database elements without any parent.

[Edward-Upton]

Still not closed since the current solution is not safe