Squashed 'libs/utils/' changes from f75a9e7..1623d65

1623d65 fix lint error in utils
f7f4556 update support-v13 library to version 19.1.0
fafcf67 Merge pull request #1781 from wordpress-mobile/issue/17760-reader-comment-full-images
1868cc5 disable refresh on the attacher
082c13f use the PTR library version 0.9.7
f21f5d3 set network refresh mode as default
d262f8d remove unused code
9e592fd add a network mode in PullToRefreshHeaderTransformer to show a different message when network is disabled
f85a003 move NetworkUtils to WPUtils subtree
d19c080 Updated comment
cabb8a7 TextView content is reset to itself to force it to correctly resize using cached image
48e4ed2 More cleanup
2426243 Cleanup WPImageGetter based on code analysis
c955d26 Merge pull request #1764 from wordpress-mobile/issue/1713-send-version-code-to-mixpanel
3bc1080 Merge branch 'release/3.1' into develop
caa9db0 fix #1762: show blog url in the share blog spinner if the blog title is an empty string
e1eecbf remove ProfilingUtils.getVersionName calls
075b989 remove unused method from ProfilingUtils
b48cbda move BuildUtils to WPUtils subtree, rename BuildUtils to PackageUtils and add getPackageInfo and getVersionCode methods

git-subtree-dir: libs/utils
git-subtree-split: 1623d651be52be036b351f6f05c728504bd9c132
Merge commit 'bee2a533de32987ff457b5a622822073f3acde95' into feature/reader-comment-activity