[ticket/365] Use portal.css instead of inline css in donations module

B3P-365
[ticket/365] Remove inline css from user menu

B3P-365
[ticket/365] Remove inline css from announcements center

B3P-365
[ticket/365] Remove inline css from announcements_center module

B3P-365
[ticket/365] Remove inline css in announcements_center_compact

B3P-365
[ticket/365] Unify announcements and news module and remove inline css

B3P-365
Merge pull request #371 from marc1706/ticket/365

[ticket/365] Use portal.css instead of inline css in donations module