Better error if ShareJS starting fails
Better error if ShareJS starting fails

scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool,scraperwiki/code-scraper-in-browser-tool