Continued rework of the regexp

- Regular expressions are now only checked for attributes

- Regular expressions are now defined and checked on a type by type
basis, with the setting "ALL" affecting all attributes

- creation / deletion of several attributes in one edit to accommodate
for several checked type options

- perform on all admin option now only saves attributes that actually
get changed by the regexp, making the function usable again for larger
databases

- Some feedback on what got changed during a perform on all

- UI changes in the index / regexp add / edit views to reflect the type
sensitivity changes