remove separate twitter bundle; use exception trapping to only regist…

[justinedelson]

…er AdapterFactory when Twitter4J is available

[justinedelson]

Upon installation, if Twitter4J isn't available, you get a single log message:

com.adobe.acs.commons.twitter.impl.TwitterAdapterFactory Twitter4J Library not found. Not registering TwitterAdapterFactory.

Note that due to #1570, this isn't actually testable as-is.

Also, this pull request doesn't remove the min packaging. I think that warrants keeping around for legacy reasons.

[coveralls]

Coverage increased (+0.03%) to 41.175% when pulling f3a1fdd on justinedelson:feature/better-twitter-loading into 700ac67 on Adobe-Consulting-Services:master.

[badvision]

Code climate strikes again... 🤕

[badvision]

We're doing a major version bump so we could remove the min packaging now, but after 4.0.0 it will be a while before we get another option to consider it.

[joerghoh]

+1 for removal of the twitter4j bundle, thus eliminating the need for the min bundle

[badvision]

I'll merge this in once the confirmation build passes (which I expect it to)