Smart truncation of branch name on the commit graph view

[nzaytsev]

Currently it's possible to lose some content to the right of the branch view when the branch name is too long. Fast solution is to truncate it using css text-overflow: ellipsis

But full solution should consider the content of the name and highlight the most important parts of the name, such as:

• branch path
• issue links

Examples:

• bugs/3448-sele...
• bugs/se...3448
• bugs/..3448..3449