[BUG] list headings truncated if more than x lists in board

[schnillerman]

Describe the bug
If more than, say, 5 lists are added to a board (depending on screen resolution and size), list headers are truncated and therefore meaningless to some extent.
They should be word-wrapped instead.

How can we reproduce the behavior

1. Create a board
2. Create some 5-10 lists each with a name like "document to be proof-read by team x"
3. See the result

Workarounds
N/A

Screenshots

Taiga environment
Taiga self-hosted, installed with docker

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome
• Version: >22

Additional context