Add simpleclock.conkyrc and made it autostart.

simpleclock.conkyrc is a simple conkyrc that prints the time and date in
the bottom right of the screen.
Also add in autostart.sh to launch it at opnebox startup.
vimrc: Fix and improved CScope handler & add Gabs.

The CScope handler was finally useful. It now add all cscope/ctags
files from parent directories of the opened file and the keymapping
only occur if said files are found and cscope is loaded. Also fixed the
annoying waiting time when using ESC. Turns out <C-[> send ESC key. So
it was changed to the original <C-@> (ctrl-space).
Merged some configurations, keymaps and functionalities from
refs/gabs-vimrc.
Also received some bugfix in my function textmode and in general.
Improvement of gentagdb.sh

gentagdb.sh now search for more extensions associated with C++ source
and header, named ".cpp", ".hh and ".hpp".
Changes in .gitignore, bashrc & openbox/rc.xml

.gitignore now ignores bash_history and vim/view (that keeps the view
state of all files opened in the editor).
In bashrc I changed the family of alias "..*" and ".{1-5}". Also enabled
the "**" filename expansion for recursive directory match.
in openbox/rc.xml I changed the theme to use Ubuntu fonts instead of
Sans.