V0.3.3 quickfixes

[kheina]

no changelog for this PR, since everything is already included in llb

fixes:

• update history page logic so that reset button is shown even with 0 history
• update wording on queue import: say currently only json
• change history page title

[kheina]

built on df17036118f203d8629d4aa76edce38588a5c07d blue-blocker-chrome-0.3.3.zip blue-blocker-firefox-0.3.3.zip