larger password input when open database (gui enhancement)

[mrmuehle]

I am new to KeePassTouch (and the whole touch ubuntu) and I struggled first with keepit, got error "invalid composit key" and overlooked the Password input constantly. If the field for password imput would be in bigger font, it would enhance the app for first time users a lot.

After a while I found it, entered the password and now I can use my passwords synced via nextcloud client.
Keepit works fine.