Definitions within pda.css are inconsistent.
1. Although the icons of the synoptic tools were defined to default-skin via
SAK-20839, it is not done to neo-skins.
2. The icon of the synoptic chat tool is not defined.
3. Although JForum and Melete icons were corrected via
SAK-21053, it is not done to the PDA portal.
4. Some icons added via
SAK-20772 or SAK-21800 are missing in some skins.