Bugfixes and new locales

Changes

• #135 Better disctinction between 1-phase and 3-phase charging detection
• elden1337/peaqev-core#47 Tests implemented for Scheduler and Session
• elden1337/peaqev-core#46 Scheduler auto-cancelation on certain events
• Improvements to negative consumptions (in particular when using solar panels)
• General stability improvements and logical re-structure to hourselection, top-up and scheduler

New Locales:

• elden1337/peaqev-core#43 Telge Energi (Sweden)
• elden1337/peaqev-core#42 Mälarenergi (Sweden)
• elden1337/peaqev-core#41 Mellom (Norway)