Replace OMERO.server Ice 3.5 logo using new icon from Gus
Expose 3.4 API documentation
Expose Ice 3.4 clients across the board
Add section about build artifacts with link to artifacts list
Exchange positions of artifacts and code
Add sentence about Ice 3.5/Windows limitations with link to the doc
Minor fixes suggested by Jean-Marie and Helen
Re-expose Ice 3.5 clients
Modify wording of Windows OMERO.server warning about Ice 3.5
Add note about other versions of the API documentation
Merge pull request #31 from sbesson/rebased/develop/rebased/dev_4_4/500beta2_fixes

Changes for the 5.0.0-beta2 pages (rebased onto dev_4_4) (rebased onto develop)