[FIX] No captcha on contactform if disabled

Fixes #1846 once merged
Merge pull request #1847 from MPOS/contactform-recaptcha-disabled

[FIX] No captcha on contactform if disabled
[FIX] Do not use CTOKEN if CSRF disabled

* [FIX] Workers page not checking for CTOKEN properly

Fixes #1848 once merged.
Merge pull request #1849 from MPOS/ctoken-missing

[FIX] Do not use CTOKEN if CSRF disabled
[ADDED] Hashrate modifier name and value

* [ADDED] Hashrate modifier value to getnavbardata
* [ADDED] Hashrate modifier name to getnavbardata

Fixes #1845 once merged.
[FIX] Apply proper fee on auto-payouts

Thanks IRC blonkel for the heads up.
[IMPROVED] Deduct TXFEE in Transaction CreateDebit

No need to deduct the fees on our cronjob, do it automatically in our
transaction class when creating a Debit record.