Improving existing functionalities

[sinpat]

20 SP

Tasks:

• [x] Ability to reactivate alarms #74
• [x] Give back the actual time left of a timer #75
• [x] Make it possible to set timers with seconds and hours #76
• [x] Give the weather in the web UI a better look #77
• [x] Provide Playlists of the used account on spotify #78
• [x] Provide the most popular playlists on spotify #79
• [x] Stop alarm sound immediately when timer is cancelled #96
• [x] Systemtime: Format date in a human (Amy TTS) readable string (5th of March blah) #93

[FlxB2]

Web Ui Pr