Replace the model version state JS capitalization helper with CSS

Sentry Issue: ARKINDEX-FRONTEND-BEZ

TypeError: Cannot read properties of null (reading 'toString')
  at Proxy.N (/arkindex/1.5.3/arkindex-users-1.5.3.js:1:1623861)
  at z (/arkindex/1.5.3/arkindex-vendors-1.5.3.js:1:88273)
  at b.u [as fn] (/arkindex/1.5.3/arkindex-vendors-1.5.3.js:1:113851)
  at b.run (/arkindex/1.5.3/arkindex-vendors-1.5.3.js:1:75618)
  at U.t.update (/arkindex/1.5.3/arkindex-vendors-1.5.3.js:1:114123)
...
(9 additional frame(s) were not displayed)

Instead of even trying to fix this error when the state is null, the capitalize function can be replaced with Bulma's is-capitalized