Bump version to 0.14
[ruleset/persistent] Do not log failed RP import (close #66)
[locale] Tiny de-DE and en-US fixes
[popup] Omit descendant domains only if there are more then 8 of them

(helps #65)
[require] debug, info, warn, error loggers
[prefs] Log fallback as info
[utils] WeakSet
[ui/popup] Pick basic widgets into separate toolkit module
[preferences-rulesets-manager] Move install buttons into footer (fix #69), hide splitter
[preferences] Collapse rulesets list and hide rules list splitter
[rulesets] Split part of Default ruleset into Compatibility and Files rulesets

(fix #71)
[locale] "Reload page" -> "Reload on change"
[l10n] Better application locale detection (fix #68)
Merge pull request #9 from futpib/master

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