Fix SKIP_LINES and should_escape in HTMLview
Fix SKIP_LINES and should_escape in HTMLview

The SKIP_LINES regex does more than just skip the current line. It
also disabled the html escaping. Fix this by separating out the
functionality by defining NO_ESCAPE_[START|FINISH]. This makes it
possible to skip lines with no side effects and also disable html
escaping based off regex's

Change-Id: I44e9d49f927ace043d42442d8b1ceac27e25e75e

openstack-infra/os-loganalyze,openstack-infra/os-loganalyze,openstack-infra/os-loganalyze