Removed invisible widgets from coloring
Several theming and color fixes

Restructured a bit how theming and coloring works. Now theme and color
changes work on the fly. No need to restart mintMenu anymore. Note that
changing theme no longer regenerates plugins, so it's faster.

Fixes issue #47
Removed duplicate line
System plugin: fix applying of settings immediately after changing them
Changed the remaining Gnome references to MATE
Removed obsolete module with gconf
Removed unused imports and some other stuff
add some missing shbangs
Better logic in focus-out-event blocking/unblocking, will not crash in Mint 13
Merge pull request #78 from monsta/rename-gnome-references

Changed the remaining Gnome references to MATE
Merge pull request #75 from monsta/remove-duplicate-line

Removed duplicate line
Merge pull request #76 from monsta/fix-system-plugin

System plugin: fix applying of settings immediately after changing them
Don't hide mintMenu on "Empty trash" popup
Merge pull request #80 from NiceandGently/master

add some missing shbangs
Replaced non-ascii character in source file
Merge pull request #79 from monsta/remove-unused-stuff

Removed unused imports and some other stuff
Merge pull request #77 from monsta/remove-obsolete-gconf

Removed obsolete module with gconf
Merge pull request #74 from hordepfo/themes-fixed

Themes fixed
Merge pull request #81 from monsta/better-focusout-blocking

Better logic in focus-out-event blocking/unblocking
Merge pull request #82 from monsta/dont-hide-on-trash-popup

Don't hide mintMenu on "Empty trash" popup