Update locale/ru/treestyletab/treestyletab.dtd
Merge pull request #238 from Infocatcher/patch-1

Improve Russian locale (by Infocatcher)
pref migration on the initial startup didn't work
fix position of twistiy in the horizontal tab bar
Twisty in tabs was not updated by "hover" state in the vertical tab bar. (regression?)
the default theme has less spaces even if it is in the vertical tab bar
version up
pref version 1 should be handled
"retro" twisties in the horizontal tab bar should not be shown on the favicon.
Clear "twisty-hover" state correctly even if the pointer goes away from the tab bar
Support border-radius and other CSS3 properties (without -moz-prefix)
Expand collapsed tree when they become to "cannot be collapsed"
Expand all tree internally, after the status is changed from "cannot collapse" to "can collapse"
Prevent to collapse tabs if they shouldn't be collapsed
Simplify updateTabbarState()
Move tab to the upper level if it is dropped on the bottom area of its parent tab (fix for #249)
Don't override the result of middle-click on the new tab button, by the result for the new tab command fired by the click event itself. (Specified behavior for middle-click on the new tab button was unexpectedly ignored. #247)
Fix typo and improve
Merge pull request #256 from Infocatcher/patch-2

Fix typo and improve Russian locale
Update buildscript