New parameters for the core:archive console command for power users

[mattab]

When using Piwik on high traffic instances, or when doing advanced debugging sessions, extra parameters are needed for core:archive console command.

In this ticket we will add such new parameters in order to provide a professional core:archive tool for Piwik users and administrators.

Suggested in: #319

[mattab]

In 0e00c39: core:archive console command: new parameter --force-periods
refs #319
refs #5396

[mattab]

In 771220c: fix bug in --force-periods logic
refs #319
refs #5396

[mattab]

In 3e22609: Add support for --force-date-range parameter + also enable Verbose logging via -v
refs #319
refs #5396

[mattab]

In 4f9ea1d: fix output logging when --force-date-range is used
refs #319
refs #5396

[mattab]

In 5b74436: add --concurrent-requests-per-website: When processing a website and its segments, number of requests to process in parallel
refs #319
refs #5396

[mattab]

In b83927f: factor out the Archive Purging code in own class
refs #319
refs #5396

[mattab]

In affc929: Remove the purge of outdated archives from the Archive loading mechanism. it should not be needed because this exact function call is already executed as a daily scheduled task. This will make archiving much faster and avoid the need of adding a flag to disable it :)
refs #319
refs #5396