Branch warn

[Pavel Sanda]

i think this is relatively new

insets/ExternalTemplate.h: In constructor 'lyx::external::Template::Template()':
insets/ExternalTemplate.h:66: warning: 'lyx::external::Template::preview_mode' 
will be initialized after
insets/ExternalTemplate.h:64: warning:   'bool 
lyx::external::Template::automaticProduction'
insets/ExternalTemplate.cpp:52: warning:   when initialized here