Update index.htm.erb
Update index.htm.erb

Fixed Telegram alt.
Changed Cryptocointalk to Cryptocurrencytalk.
Changed IRC link to help channel. (don't need to be registered)
Changed image links to new images.
Added Discord.
Changes Steem alt to Steemit.
Decapitalized all alts.
grctest/Gridcoin-Site,barton2526/Gridcoin-Site,barton2526/Gridcoin-Site,grctest/Gridcoin-Site,barton2526/Gridcoin-Site,grctest/Gridcoin-Site