LDEV-2595: CKEditor needs an HTML element ID to recognise which div/textfield to replace. Changed ambiguous naming in Noticeboard tool - two elements had name "content".
LDEV-1255: Moving the code for stopping jsps caching to a new custom tag, so that it can be applied consistently across all pages. Moved the utf-8 statements to the same tag so we don't have to remember to put them in all pages.