Not compressing a specific js bloc

There is a js inline block in _conf.html which seems to generate wrong
key in the offline manifest.

Since it's a small portion, there is no performance issue innot compressing it
and Offline compression works again

Change-Id: I6dd9095cb8ad6f024b886a6ba3b419c52cb41425
Closes-Bug: 1155765
Merge "Not compressing a specific js bloc"