Add alternative domain option to file and image polymod fields objects
Add option to set an alternative domain for standard module files and image ressources
Update blockimage and blockfile to use the new alternative domain parameter
Merge pull request #47 from DirtyF/4.2

FIX #44: Error 500 on a unpublished page using an alias
Fix a regression introduced by commit 838f7b0d558b40d3ae7f6a27fe8a0772a3f850b3
Made the new alternative domain available in polymod templates
Add a translation for polymod module that disappeared two years ago
Merge branch '4.2' of https://github.com/automne-cms/automne into 4.2
Merge pull request #53 from automne-cms/alternative-domain

Alternative domain
Fix #48 - Update documentation to match the code, and allow usage of both commas and semicolons
Fix #49 - Add possibility to use :value on polymod float fields