When running 'make -C locale all-mo', I got:

make: Entering directory `/home/vagrant/foreman/locale'
mkdir -p ca/LC_MESSAGES
msgfmt -o ca/LC_MESSAGES/foreman.mo ca/foreman.po
mkdir -p de/LC_MESSAGES
msgfmt -o de/LC_MESSAGES/foreman.mo de/foreman.po
mkdir -p en/LC_MESSAGES
msgfmt -o en/LC_MESSAGES/foreman.mo en/foreman.po
mkdir -p en_GB/LC_MESSAGES
msgfmt -o en_GB/LC_MESSAGES/foreman.mo en_GB/foreman.po
mkdir -p es/LC_MESSAGES
msgfmt -o es/LC_MESSAGES/foreman.mo es/foreman.po
mkdir -p fr/LC_MESSAGES
msgfmt -o fr/LC_MESSAGES/foreman.mo fr/foreman.po
mkdir -p gl/LC_MESSAGES
msgfmt -o gl/LC_MESSAGES/foreman.mo gl/foreman.po
mkdir -p it/LC_MESSAGES
msgfmt -o it/LC_MESSAGES/foreman.mo it/foreman.po
mkdir -p ja/LC_MESSAGES
msgfmt -o ja/LC_MESSAGES/foreman.mo ja/foreman.po
mkdir -p ko/LC_MESSAGES
msgfmt -o ko/LC_MESSAGES/foreman.mo ko/foreman.po
mkdir -p pl/LC_MESSAGES
msgfmt -o pl/LC_MESSAGES/foreman.mo pl/foreman.po
mkdir -p pt_BR/LC_MESSAGES
msgfmt -o pt_BR/LC_MESSAGES/foreman.mo pt_BR/foreman.po
mkdir -p ru/LC_MESSAGES
msgfmt -o ru/LC_MESSAGES/foreman.mo ru/foreman.po
mkdir -p sv_SE/LC_MESSAGES
msgfmt -o sv_SE/LC_MESSAGES/foreman.mo sv_SE/foreman.po
mkdir -p zh_CN/LC_MESSAGES
msgfmt -o zh_CN/LC_MESSAGES/foreman.mo zh_CN/foreman.po
zh_CN/foreman.po:7017: 'msgid' and 'msgstr[0]' entries do not both end with '\n'
msgfmt: found 1 fatal error
make: *** [zh_CN/foreman.mo] Error 1
make: Leaving directory `/home/vagrant/foreman/locale'

caused by:

msgid "Select this host" 
msgid_plural "Select all <b> %{total} </b> hosts" 
msgstr[0] "" 
"选择这个主机\n" 
"选择所有 <b> %{total} </b> 主机\n" 

fixed version:

msgid "Select this host" 
msgid_plural "Select all <b> %{total} </b> hosts" 
msgstr[0] "" 
"选择这个主机\n" 
"选择所有 <b> %{total} </b> 主机"