New HTTP API method "repTowages", required by SAGAI exporter.

PSA-specific handlers moved to separate module. Using QQ for query
strings now.
Return case ids in repTowages handler instead of service ids.
Do not include the original case.
Clarification
Use "repTowages" CaRMa method to properly assign towage expense type.

Use methodURI helper in Main module for "psaCases"
More docs, extended error types to keep more context
Do not include full service data in error context
Typo fixed
Fix repTowages method name
I are of righty spellings nao
Extend CaseExport monad to include logging facilities (not used yet)
Cache ExpenseType calculation for services to avoid redundant work
Log expense types and exported services
filter "'" in city name when retrieving weather
add reload button to call screen, and set hotkey C-n #450
Update srv/resources/site-config/models/tech.js

Добавлено поле "Номер заказ-наряда"
#438
Basic syslog logging
fix inputs on rkc screens #425
Add some reasons why service could be urgent (#451)
Change urgentService field to dictionary (#451)
Update urgentService column in PG (#451)