Meteogram

[Zren]

• [x] Temperature graph
• [x] Percipitation bars (need a good minimum scale, currently at 5mm)
• [x] Change color a zero degrees (like the android aix weather widget)
• [ ] Translate graph to current time (requires rewrite to draw scale guides properly, and to clip the temp line + rain bar)
• [x] Expire hourly weather at dateTime % 3hours, instead of a TTL cached 1 hour.
• [ ] Get the current weather temp
• [x] Weather Icons
• [x] Follow theme colours (or customizable colours)
• [x] Enabled by default instead of spacer
• [x] 36h or 48h forecast?
• [x] Support 24h clock labels