Cleaned up icon positions. Removed icon loading from resource manager. * chat.png: Moved to gui/src/icons. * help_index.png: Moved to gui/src/icons. * icons_license: Moved to gui/src/icons. * jabber_protocol.png: Moved to gui/src/icons. * logo.png: Moved to gui/src/icons. * terminal.png: Moved to gui/src/icons. * main-window.cc: Removed retrieveing icons from resource manager. * octave-gui.cc: Removed loading icons with resource manager. * resource-manager: Removed code for loading and retrieving icons. * resource.qrc: Added icons to resource file.

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