Fix #464 - Support placeholder attribute for inputs in find mode

Whereas find mode normally identifies inputs by their value, if a value
is blank, find mode will use the placeholder value instead, if it exists
Merge pull request #748 from mhchen/issue_464

Fix #464 - Support placeholder attribute for inputs in find mode
Make smartcase locale-aware.
Fix #766 vomnibar is displaying incorrectly on pages that have CSS setting the input styles
Merge pull request #767 from neouser99/master

Fix #766
Added duplicateTab call
Added commands for duplicate tab
Finalized duplicateTab feature
Added `gU` command to go to root of page including current port and protocol
Added email to credits
Trying to add incognito window opening
Implemented opening links in Incognito
Added credits
Added credits
Added functionality to "float" current tab ie. open in new window
Merge pull request #782 from deiga/patch-1

Added feature to duplicate current tab
Moved to advanced commands and renamed command for clearness
Removed erroneous log call
Renamed to 'goToRoot', condensed function
Merge pull request #783 from deiga/patch-2

Added `gU` command to go to root of page including current port and protocol