wifi changes saved flag incorrectly set
The internalSaveDone flag is being set even if the corresponding save method wasn’t called (as is the case with SDK 16)

Addresses https://github.com/shouldit/android-proxy-library/issues/12
Revert "wifi changes saved flag incorrectly set"

This reverts commit 405f0cead1d091aaf1878c6818c7fcfc910b3bbc.
wifi changes saved flag incorrectly set
The internalSaveDone flag is being set even if the corresponding save method wasn’t called (as is the case with SDK 16)

Addresses https://github.com/shouldit/android-proxy-library/issues/12
Merge pull request #13 from thomas-bennett/issue_12

Fix: proxy settings aren't saved for sdk 16