Interrapt G26

Description.
The field title is supposed to met minimum character limit of 5 characters and a maximum limit of 20 characters for the title. The page currently allows users to create new tag with less than 5 characters in the title.

Steps to reproduce:
1. Login on interrapt
2. Open Tags from the sidebar
3. Click on Create
4. In the title filed enter title with less than 5 characters (Aa)
5. Fill all the other fields
6. Click on Create

Expected result 
New tag should not be created, message in red letters should be displayed telling the user surname field is required.

Actual result
New tag is created with less than than 5 characters, without providing any error feedback that criteria is not met.