Remove character limit on Talk Outline #34
Description
This is a leftover remnant from porting this over from RubyConf/RailsConf, where the field we're calling Talk Outline was previously Abstract. The way Abstract was used, it was wise to put a ~600-character limit on it, since these were going to be copied over to the conference program.
That's not the case for the Talk Outline for CodeLand, and moreover, when proposers have been receiving this error message, it discourages them from writing as much in Talk Outline as we may want to hear.
Can we simply remove the character limit completely from this field? This is an open CFP, but as we only have about 25 submissions so far, we think this would be a good time to change it and then just update the people who've already submitted that they can expand their outlines now if need be.