Remove wix pages

[polly64]

• [x] Re-link menu items to open manual as below
• [x] Add new menu items and create relevant open manual links as below
• [x] Reword contributor and data user agreement https://colouringlondon.org/data-accuracy.html as below

Data accuracy agreement

Data accuracy Colouring Cities data are provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, accuracy, fitness for a particular purpose and non-infringement. In no event shall the Alan Turing Institute or the ............ (add required field for platform host) be liable for any reliance that you place on or how you use the data nor any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the data or the use or other dealings in the data.

Colouring Cities data are crowdsourced from multiple sources and may contain errors. It is wholly up to the user of Colouring Cities data to ensure that these are sufficiently accurate for their purpose and that they are used in a responsible, ethical and constructive way. Though we cannot comment on data accuracy, we include as many features as possible to help users assess their reliability and suitability for specific types of use (be this a school project or scientific paper). As information on sources is very important, contributors are asked to add these, and to verify data, wherever possible.

[mdsimpson42]

I believe all links to the Wix site have now been removed from the menu.

[polly64]

@mdsimpson I think we were just going to leave the who's involved for the moment (see #1195)

[mdsimpson42]

Closing this issue. (It's also closely related to #1088, which still has some outstanding tasks on it).