split question 14 in two

too long as it was so splitting in two to make it a bit less unwieldly
also renumber all the following questions
small wordin change to Q11
use a class to indicate checkboxes that are exclusive

rather than lots of repeated code add exlusive class and then have
jQuery add the onclick handler that toggles the disabled attribute on
all other options for that question
add toggle of optional question to q15

refactor q14 into generic method and apply it using a class
add none of the above option to q16

plus associated JS code to disable all other options
Add don't know/none of the above options to all the simple questions
add exlusive options to all table based questions

in the process refactor existing exclusive JS code a bit to make it
generic enough to cope with the table and simple checkbox options by
passing in the selector to use for the inputs to disable
correct typo in label from attribute
add more options to q11 and q12

turn them into two row tables and add more options for local and
national options
fix screen numbering
add project funder logos to front page
restrict age field to two characters