Pre-release version of the NESP website

Added

• social media links (#74)
• resource content (#75)
• meta tags in header (#78)
• tests of page access (#79)
• build badge to readme (#82)
• connection to postgres database (#85)
• gauge max value is queried from the database (#96)
• all gauges values are queried from the database (#98)
• index.py file (#101)
• objectives route and blueprint (#128)
• links from logo (#129)
• about-map page (#153, #162)
• fadein for features (#155)
• automatic redraw of gauges when scrolling over (#157)
• automatic interval change of feature when section is in viewport (#157)
• link to web development credit page (#157)
• developed-by page (#162)

Changed

• allow use of variable via URL (#76)
• make table in about responsive and centered (#88)
• dockerfile setup to use postgres (#91)
• OG grid mapping image (#95)
• gauge line is thicker (#96)
• adapt setup_maps.py for windows users (#101)
• the webmap uses its own base template (without header and footer) (#101)
• ratio of giz logos (#129)
• objective cards design (#145)
• images size (#148)
• nigeria se4all section in about page centered with images inline (#154)
• rename about-map.html credits.html (#162)

Removed

• app/index.py file (#101)
• outline around the clicked links (#129)
• about-map blueprint (#162)

Fixed

• chrome display bug #64 for small screens (#86)
• return button was not working (#93)
• mismatching font for gauges numbers #97 (#98)