Change link of 'upgrade' banner

See merge request !1165

Hangouts: Add block with link to mailing list

Closes #1000

See merge request !1164

Add pt-br translation of Monero_Promo video

See merge request !1155

Improvements to 'Merchant' issue template

See merge request !1149

Add xmrnotify.com to Merchants/Tools

See merge request !1166

New download page

Closes #997 and #991

See merge request !1159

Add merchants + Fix typo

Closes #1008, #1011, #1007, and #1004

See merge request !1153

Make blog more clean

See merge request !1150

- new structure of Downloads page
- add screenshots of GUI (and make them localizable)
- add pics for hw wallets
- change structure of downloads.yml

New announcement entry: some info about general fund

See merge request !1163

Remove 'Warning' banner

See merge request !1161

Add possibility to play localized videos + welcome video in Russian

Closes #952

See merge request !1152

The very first Community meeting ever

See merge request monero-project/monero-site!1147

Meeting logs for October

See merge request !1146

blog post for CLI and GUI 0.15.0.1

See merge request !1160

Warning banner + blog post about compromised binaries

See merge request !1154

Announce binaries of 0.15

See merge request !1151

- Healthier Matters #1008
- Copy Corner #1011
- Evolution Host #1007
- AgoraDesk #1004

This commit add the possibility to add videos with the voice-over in different languages.
The videos should be uploaded in /media/LANG/, where lang is the language code, and should
have the same name and extension of the original in English.

This commit also adds the "Monero Promo" video with voice-over in Russian, made by the
xmr.ru community.

Only use 'Blog' as a page title instead of 'Blog By Tag' and remove 'Articles by Tag'.

Updated banner for network upgrade

See merge request !1148