[enh] All blocks: possibility to use of icons/images for all blocks

[HansieNL]

Now there a blocks where adding an image is not possible, because of it's fixed code.
For example: publictransport.ovinfotrains= { image: 'ns.png', station:... The image will not be shown.

[aalwash]

Isn't this the same issues as #14 ?

[lokonli]

I've fixed and closed it for blocktitles, see #14.
I'll use the fix as a template for the other blocks as well.

streamplayer
publictransport

more?

[HansieNL]

I'll try to complete my list...

• traffic
• train
• news
• gas
• energy
• thermostat setpoint

[lokonli]

streamplayer
publictransport
traffic
train
news
gas
energy
thermostat setpoint
longfonds

This is becoming too much to make a fix 10 times. I'm going to switch to a class based block template architecture. Quite a change, so implementation will take more time.

[HansieNL]

Take your time. To keep it simple it is better that icons/images can be changed the same way.

[lokonli]

Progressing.
Finished the general framework. Updated streamplayer, frame and news.
After I've finalized the other 'special' blocks (publictransport, traffic, longfonds) I'll merge it into beta.

[lokonli]

Progressing.
See #94
https://github.com/Dashticz/dashticz/tree/toComponents
https://dashticz.readthedocs.io/en/tocomponents/releasenotes/upgrading/v320.html

[lokonli]

Solved in v3.2.0 beta.

See #108

[abaratian]

no, still the image/icon for thermostat cannot be changed