client: rework template code (libclient + client)

src/client/cmdLogin/login.go

src/client/cmdTemplate/templateCreate.go

src/client/cmdTemplate/templateDel.go

src/client/cmdTemplate/templateEdit.go

src/client/cmdTemplate/templateExportDisk.go

src/client/cmdTemplate/templateList.go

src/client/cmdTemplate/templateListSingle.go

src/libclient/template/templateEdit.go

src/libclient/template/templateExportDisk.go

src/libclient/user/userCreate.go