optimized palettes
optimized module's description
optimized help wizard of email content fields
added insert tags to accountmail
fixed missing type
renamed disableAccountMail to isDisabledAccountMail
fixed DataContainer parameters
fixed incorrect methods and annotations
added own insert tags
fixed data with session
added rendering parameters value
optimized to psr-2
marked deprecated methods
optimized helpwizard
fixed language file loading
Merge remote-tracking branch 'origin/feature/insert-tags' into development

Conflicts:
	system/modules/accountmail/languages/de/tl_email.php
	system/modules/accountmail/library/iCodr8/AccountMail/Account.php
	system/modules/accountmail/library/iCodr8/AccountMail/Email.php