[Merge] lp:~fboucault/webapps-core/crossbuild_fixes into lp:webapps-core

[David Barth]

Note that the debian files are not really used anymore, but just in case something relies on it, the change is worth merging. Thanks
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https://code.launchpad.net/~fboucault/webapps-core/crossbuild_fixes/+merge/299200
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~fboucault/webapps-core/crossbuild_fixes into lp:webapps-core.