Make the escapeMarkup function escape html tags and some other characters and apply it to usefull places
add loadMorePadding option

- Trigger load before scrolling to the very bottom.
- When scrolling very fast, unless we pre-load entries, the page itself
  will scroll.
Merge pull request #697 from agworld/add-load-more-padding-option

add loadMorePadding option
Merge pull request #691 from jelte12345/master

Fix XSS injection