Added BugzillaOnlineParser many bugs test

Added Mozilla fetch and parse bug integration test

Added limit parameter to bug filter
Removed unused comments and history settings
Removed unnecessary password length validation

Corrected Bugzilla url validation pattern - excluded ftp and file protocols

Removed unused limit constant
Refactored BugzillaOnlineParser
Improved performance by downloading only the required fields

Refactored BugzillaOnlineClientAdapter