add cli switch to enable verbose logging

this changes the previously verbose log messages to not be displayed by
default, they can be enabled by starting the pzp with "--debug". also
introduces info log messages to indicate successful start up.

Jira-issue: WP-1286
Missing resources for testpages

Jira-issue: WP-1289
Merge pull request #74 from aldafu/WP-1286-make-verbose-logging-optional

add cli switch to enable verbose logging
Adds optional wrt/browser side logging

Jira-issue: WP-1286
Cosmetic fixes to logging

Jira-issue: WP-1286
Merge pull request #75 from mlasak/WP-1289

Missing resources for testpages
Merge pull request #76 from mlasak/WP-1286

Adds optional wrt/browser side logging