This updates the breakpoint images, line colors, and moves breakpoints toggle button
to the Debugger sidebar navigation bar.

https://bugs.webkit.org/show_bug.cgi?id=117723

Reviewed by Joseph Pecoraro.

* Localizations/en.lproj/localizedStrings.js: Updated.
* UserInterface/DebuggerSidebarPanel.css: Removed custom toggle button rules.
* UserInterface/DebuggerSidebarPanel.js:
(WebInspector.DebuggerSidebarPanel):
(WebInspector.DebuggerSidebarPanel.prototype._breakpointsToggleButtonClicked):
* UserInterface/Images/Breakpoint.png: Updated.
* UserInterface/Images/Breakpoints.pdf: Added.
* UserInterface/Images/Breakpoint@2x.png: Updated.
* UserInterface/Images/BreakpointButton.pdf: Updated.
* UserInterface/Images/BreakpointInactive.png: Updated.
* UserInterface/Images/BreakpointInactive@2x.png: Updated.
* UserInterface/Images/BreakpointInactiveButton.pdf: Updated.
* UserInterface/Images/InstructionPointer.png: Updated.
* UserInterface/Images/InstructionPointer@2x.png: Updated.
* UserInterface/SourceCodeTextEditor.css:
(.source-code.text-editor > .CodeMirror .error): Updated background-color and removed box-shadow.
(.source-code.text-editor > .CodeMirror .warning): Ditto.
* UserInterface/TextEditor.css:
(.text-editor > .CodeMirror .has-breakpoint .CodeMirror-linenumber::before): Changed left position to 0.
(.text-editor > .CodeMirror .execution-line .CodeMirror-linenumber::after): Updated position.
(.text-editor > .CodeMirror .execution-line): Updated background-color and removed box-shadow.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@151687 268f45cc-cd09-0410-ab3c-d52691b4dbfc