LONDON (Reuters) -Britain’s BBC will move its children’s CBBC channel and culture-focused BBC 4 online and merge its global and national news channels in changes announced on Thursday that will save millions of pounds and make the broadcaster “digital first”. The publicly-funded broadcaster’s staff will drop by up to 1,000 over the next few years, it said. The BBC’s income from a licence fee paid by all TV-watching British households has been frozen for the next two years, and will rise in line with inflation for the following four. Director-General Tim Davie told staff that the corporation, w…