Build 190526 (preview)

• conemu#1906: Add missed ‘ru’ l10n strings.
• L10N: Add Español translation, pull translations from Transifex.
• conemu#468: Auto update environment variables, changes are applied to new consoles only.
  • GuiMacro functions EnvironmentReload and EnvironmentList.
  • Switch -NoAutoEnvReload disables env.reloading for session.