Move to main thread interface updates after refresh

Fix some crashes, especially frequent in 10.10
When a tab is closed, reset to blank its webview

Prevent sound of some Flash videos from continuing playing
Merge pull request #321 from barijaona/bugfixes

Bugfixes
Add new monochrome status bar icons, consistent with Apple's OSX Human Interface Guidelines. Courtesy of Font Awesome by Dave Gandy - http://fontawesome.io/, used under a SIL Open Source Font (OSF) 1.1 license
Remove old status bar icons and references to them
fix for dark menu bar in OS X 10.10

Set template to YES for the statusBarImages so they are rendered
correctly with the dark menu bar in OS X 10.10
added sparkle stats php script URLs for #322
added system specs checkbox for #322
wired up sparkle code for enabling sending system specs for #322
wired up NSButton for #322
added send system specs UI control for #322
Merge pull request #2 from josh64x2/Echelon9-fix/monochrome-status-bar-icon

fix for dark menu bar in OS X 10.10
Merge pull request #323 from Echelon9/fix/monochrome-status-bar-icon

Add monochrome status bar icons (read and unread)
Built and tested OK on 32bit Snow Leopard, and 64bit Yosemite
Generated internationalised versions of GeneralPreferences.nib
Vertical & horizontal layout : fix panes’ min & max dimensions

Correct the minimum and maximum dimensions for the NSSplitView panes respectively used for the article list and the article view.
Vertical layout : allow summary to expand more.

Only the summary column (used in vertical layout) should autoresize (to fit the available space)
Better dimension saving when switching layout

For when user switches from vertical to horizontal layout and vice-versa
Fix an occasional bug when switching view

When an articleView is recycled while switching from the unified layout to another one, the ArticleListView could receive a notification he couldn’t handle.
Clarify some comments
changed wording of preference for sending system profile