RWS: close details window when ESC is pressed
Add some documentation about troubleshooting too many connections to the database.
AWS: fix AJAX RPC calls when the server is proxied with a prefix.
Russian translation
Fixed stress-test script to work with current version of CMS.
Added request duration output for stress-test requests.
Allow stress-testing from outside of contest local network.

Added stress-test script options to retrieving the contest data from a
file instead than from the database, and to store those information in
the file.
StressTest working with tasks with no statements.
New contributor.
Fixed notifications showed repeatedly in admin interface.
Merge remote-tracking branch 'upstream/master'