Replace PNG icons with shields.io-style SVG icons

[mgedmin]

Fixes https://issues.jenkins-ci.org/browse/JENKINS-23062 and
https://issues.jenkins-ci.org/browse/JENKINS-21112

[cloudbees-pull-request-builder]

plugins » embeddable-build-status-plugin #13 UNSTABLE
Looks like there's a problem with this pull request

[cloudbees-pull-request-builder]

plugins » embeddable-build-status-plugin #14 UNSTABLE
Looks like there's a problem with this pull request

[cloudbees-pull-request-builder]

plugins » embeddable-build-status-plugin #15 SUCCESS
This pull request looks good

[mgedmin]

I've manually tested the .hpi built by cloudbees-pull-request-builder. It works:

[jenkinsadmin]

Thank you for a pull request! Please check this document for how the Jenkins project handles pull requests

[vladikoff]

[vladikoff]

@mgedmin I kind of wish the badge would say jenkins passing, but that's mostly because my project runs both Travis and Jenkins for different purposes.

[suryagaddipati]

Nice work @mgedmin . LGTM

[mgedmin]

I kind of wish the badge text was configurable (I have Windows and Linux builds, in addition to Travis CI, at http://projects.gedmin.as/#maintenance), but that would be a different issue.

[vladikoff]

@mgedmin how would this get merged?

[mgedmin]

I'll ask for the commit bit on the dev mailing list, as per http://jenkins-ci.org/pull-request-greeting

[jglick]

@mgedmin are you now maintaining this plugin? If so, do you plan to cut a new release soon? I have been asked about the status of #6 (JENKINS-17028).

[akoeplinger]

I'd also like to have a release with the caching changes.

Additionally, the following PRs make basically the same changes as this PR, so they can be closed I think: #3, #7, #9

[mgedmin]

I'd also like to have a release :-)

I have the commit bit now. I know nothing about cutting releases. I'd hoped I would find some time/energy to learn and try to do that, but if anyone else can, please don't wait for me!

[akoeplinger]

@mgedmin a recent release which includes the changes of this PR was done with 50f2a49 and I see it on the Jenkins plugin wiki, so my needs are fulfilled :)

[mgedmin]

It would be good to have support for alternative styles (e.g. ?style=flat), as seen on http://shields.io or https://travis-ci.org.

[mgedmin]

There's a planned flag day (Feb 1st, 2015) for switching all shields.io-based badges to the flat style by default: badges/shields#185 (comment)