Update themes-settings.html

Fix #8712 (part 1 of 2)
Update themes-settings.html
Update strings.js
Update strings.js

Changes made -- ready for another review
Use resultSet array length for total match count rather than using the length of Marked Text.
Update strings.js

Update translate Italian language for Brackets 0.43
Merge branch 'master' of https://github.com/adobe/brackets
Add unit test.
Fixed Side Bar's quiet button hover border.
Merge branch 'master' of https://github.com/adobe/brackets
Fixed Extenionsion Manager tab focus styling.
Merge pull request #8799 from adobe/alf_localization

ALF Automation
Fixed #8800.
Verify the match count with the displayed string.
Merge pull request #8728 from adobe/rlim/total-match-count

Use resultSet array length for total match count
Merge pull request #8770 from adobe/larz/issue-8769

Fixed Side Bar's quiet button hover border.
Merge pull request #8791 from adobe/larz/issue-8781

Extension Manager tab focus styling fix.
Merge pull request #8803 from adobe/larz/issue-8800

Reverting match highlight colors.
I missed the active state border.
I need a vacation D: