Results 3 issues of Waltton Morais

Before this PR: after cancelling a context for a collector all requests failed with "context canceled" but the delay set by the limit rules still applies. The intention here is...

Some examples of the weird behavior when mixing flag and envvar: ❌ bar default overwrite bar value from envvar ``` $ BAR=bar-envvar ./test-confita -foo=foo-flag 2019/09/29 10:24:37 cfg.Foo: 'foo-flag' 2019/09/29 10:24:37...

bug

When the option 'enableLinks' is true all nodes was receiving the attribute 'href' even if there wasn't none in the node declaration in the data. Now only when the node...