Add user-defined additional icon aliases for searching
Maybe it's too complex to implemrnt, so, now it's just like a dream. I think it could be useful to have a possibitity to add additional tags(aliases), which can be used for searching icons. Because:
1) One icon can have several meanings (or can be described by different words)
2) It can be used for i18n. Now we can search only in English
