Customized copy of the usual en/common directory deleted because the
standard version from tdelibs is always used for TDE version.
Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
Add support for LINGUAS for listing translations to install.
Use common cmake rules for documentation.
Signed-off-by: Slávek Banko <slavek.banko@axis.cz>