[webui] sort architectures by name
[webui] catch invalid packages in attribute/edit
[dist] update gem versions
[dist] we don't need launchy, headless and rcov anymore
[api] get rid of db_ prefix in project and package foreign keys
[api] avoid package ids in fixtures
[webui] speed up sitemap_projects
[webui] simplify boolean logic
[api] fix project copy into existing project (2.4 regression)
[api] do not crash on activity update in full logging mode when no activity has set yet
[api] beautify code, new() is enough here ...