Don't hide search suggestion during typing & limit suggestions.

#### Keep search suggestions, during typing in search field ####
It is quite annoying that when the suggestions are shown, they immediately hide when you continue typing. Removing unneeded clear actions solves this. When clicked beside the input or output `closePopups()` in `lib/scripts/script.js` closes the popup.

#### Shorten search results for a few character search term ####
When the search input is still only a few characters, the number of matching pages is big.
Browsers have heavy work to progress this whole return, better cut off so only the part that is directly displayed will be sent. 50 is quite random number.