address and chairperson alignment "broken" after update to 2.0

[Yasharah]

Hello,
after i upgraded our indico server to the newest version, the alignment of some things changed on the conference theme

before (1.9.11.dev15):

after (v2.0a1):

[ThiefMaster]

That looks indeed broken. We'll have a look into it and hopefully fix it in 2.0a2.