Fixed repository browser alignment (#15307).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012272
Fixed uninitialized constant Redmine::Scm::Adapters::CommandFailed error when reloading in development mode.

--HG--
extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012273