Moved the cleaner functions to app/utils/escaper.py
Removed unused import 're'
Moved the cleaner functionalities to the "search.py" and "routes.py"
Making sure escaped chars stay escaped during process
Replaced "<" and ">" with "andlt;" and "andgt;", respectively. This way,
when the 'response' object get loaded to bsoup (which happens several times
throughout the process between search.py and routes.py), bsoup will not
unescape them.