minor text update.
Merge branch 'kartik-v-patch-4'
Add support all type relation
Implemented qiangxue's solution as it is much simpler.
Hide output when only one page exist
Fixed path in unit test to use the directory separator variable.
Merge pull request #3529 from skotos/3522-normalizepath-current-path

#3522 normalizepath to allow current path
Add param for configuring rendering result with one page
Changed param name
[WIP] #3527 Improving Elasticsearch extension
[WIP] #3527 Fixing spaces
Merge pull request #3541 from yiiframework-com-ua/3527-elasticsearch-enhancements

[WIP] #3527 Improving Elasticsearch extension
Merge branch 'master' of github.com:yiisoft/yii2
Refactor
Merge pull request #3537 from arturf/master

Hide output in LinkPager when only one page exist
Add $key to function parameter

I think it's better to enclose `$key` as function parameter.
tried to fix tests for #3472
Issue 3532: Add note about AR default values to upgrade notes
Fixes #3548: Fixed the bug that X-Rate-Limit-Remaining header is always zero when using RateLimiter
Merge pull request #3546 from mikehaertl/master

Issue #3532: Add note about AR default values to upgrade notes