Add source icons to Tagregator

[samuelsidler]

The Tagregator does not currently have source icons (Twitter, Instagram, Flickr). It would be useful to know the source before clicking through. (See also: wp10.wordpress.net)

[iandunn]

Should probably use Genericons for this.

[samuelsidler]

Not Dashicons? We could probably get the relevant ones added, but I suppose it'll depend on how many sources there are.

[iandunn]

Is Dashicons really meant to be a general purpose icon set, or just the specific ones needed for wp-admin?

[dd32]

This sounds like a good use-case of ​Genericons if all the ones needed aren't in ​Dashicons

[digne]

Tagregator plugin with social media icons

[digne]

I tried to respect the brand guidelines as much as I could and yet still have some uniformity between the 3 sources.

​https://dev.twitter.com/terms/display-requirements
​https://www.flickr.com/services/developer/business/
​https://help.instagram.com/304689166306603

[iandunn]

Committed digne's changes in ​r943100-plugins.

Thanks :)