Add a text search capability

[ArtOfCode-]

Source: https://crowdrescuehq.slack.com/archives/C74G14VL4/p1508847684000106?thread_ts=1508831250.000327&cid=C74G14VL4

As to SCOT, fairly easy solution there: add a "search all entries" button. Just make it a localized search to everything that's been written thus far. Right now, we have a municipality search. I'd keep that, but also expand it to just a word-by-word search. So, "blue water" would be blue, water, and the combination. Sort of like the search here on Slack, but probably less complicated. Right now, you could generate a script and ctrl-F it, but the list cuts off at a certain length if you leave the dates infinite. So take out the middle step of generating and basically ctrl-F the whole thing for us.