popupMenu.js: avoid unintended side effect of unexpected recursive call of PopupMenu.close

Calling this._boxPointer.hide in PopupMenu.close triggers
PopupMenuManager._onKeyFocusChanged,
which ends up calling PopupMenu.close recursively, causing
global.menuStackLength to be decremented twice.
Issue #2060 - cinnamon-settings can hang

If any subprocesses executed by cs_info.py hang (such as a hung
NFS mount preventing "df" from returning), then cinnamon-settings
will never start.

This adds a 2 second timeout for any subprocess which will cancel
the operation and kill the process if all output isn't received
during the timeout period.
reload extension-defined-stylesheets on theme change
Issue #2087: extend Skype focus fix to Quassel
Remove browser-plugin directory
Remove references to browser plugin from configure.ac/Makefile.am
Update .gitignore
Remove licensing information for folders that are removed from Cinnamon
Cinnamon does not include src/big/* and src/gdmuser/* anymore.
Get displays page out of Advanced mode
Allow opening cinnamon-control-center pages which are hidden
Added return true for left arrow press

also normalized code indentation
Fixed a typo (preset -> present)

Fixed in default location and various English localizations
Revert "Added return true for left arrow press"

This reverts commit 81684d06de76dfd2915e61973b9928af653ad275.
Reverted typo fix, will do it later
Merge pull request #2111 from mtwebster/color-set

settings api:  Handle Gdk API differences when using Gdk.RGBA
Merge pull request #2105 from mtwebster/spices-crash

cinnamon settings:  Fix spices crash and accidental deletion of spices thumbnails.
Merge pull request #2101 from AlbertJP/cinnamon-settings-1.8

[1.8] Allow opening cinnamon-control-center pages which are hidden
Merge pull request #2074 from mtwebster/theme-files

Make sure to copy all theme files over - some were missing
Merge pull request #2082 from scotte/2060_cinnamon-settings_hang

Issue #2060 - cinnamon-settings can hang
Merge pull request #2064 from mtwebster/executable-spices

cinnamon-settings: Workaround for bug in zipfile.extractall