Website modifications

Activity pages (Match up/Unjumble/Fill the Gaps/Translate)

- Add a PDF button in the menu bar to the left of the ‘back button’ (button attached)
- This new function will generate a PDF worksheet and download it automatically.
- The appearance of the PDF worksheet should be the same as the appearance of the activity on the page. (see example attached)
- Each page of the PDF should fit 20 lines/sentences maximum in both Language 1 and Language 2.
- If there are more than 20 lines/sentences then the rest will be on page 2, page 3 etc...
- If a sentence is too long in either Language then the rest of the sentence should be displayed on the line below. The whole sentences should always be displayed.

Other :
- Delete the Buy me a Coffee Button on the Home page
- Replace the Follow @ sentencify on all pages with a Twitter logo button which links to the twitter page @sentencify (not follow)