Add search function to text module management

[Stubenhocker]

Hello

It would be neat if the text module management page in the admin section could receive a search field. Would make finding existing modules for editing much easier.

[Stubenhocker]

Looks like this is already an open issue to be improved upon in the future:

Add search option to admin screens (like it already exists for users) to text modules, macros, organizations, groups, overviews, triggers, schedulers, ...

Nice!