ui: display hours instead of minutes

[zven]

At the moment, users can enter minutes when creating badges.

Up to a certain duration, we are showing minutes (120 min.), after that hours with 0.5 steps (always rounding up). We should do this in a consistent way and are currently discussing two options:

1. We always show minutes and hours in combination e.g. 1 h 12 min, 13 h or 59 min. We would also provide separate hour and minute fields for the duration information of badges / competencies.

2. As already implemented in the learning path feature we could also display the duration information in the format HH:MM Stunden or HH:MM h. The duration input fields for badges and competencies would need to be adjusted to only accept this format (and highlight that in a smart way).

Update time display / entry information in the following places:

• [x] badge cards
• [x] badge views
• [x] competencies (website and PDF)
• [x] badge editing and creation process

[zven]

Update: currently waiting for decision.

[zven]

After talking to @Annicelia: We go with version 2. HH:MM h

[umut0]

There is an hourPipe in the learningPath PR that converts times into this fomat.

[umut0]

We leave this field as it is? or also the h representation?

[Annicelia]

can you round up or down here so that there is always a full number of hours without minutes? then I would leave it like it is, "82 Stunden". and please make it "Lernzeit" instead of "Lernzeiten"

[zven]

Extra todo: Limit input form to max 999:59 h

[umut0]

The pdf will be fixed in #716