Updated Version to 1.3, several bash improvements, and added vimrc_bash

Updated Version to 1.3
Bash improvements
- timesheet is written to Dropbox if available. Otherwise written to $HOME
- updated prompt() to maintain spaces in arguments
- Updated show_dotfiles function to check arguments
- Added seg(). works just like numseg() but doesn't use line numbers
- Added note() - useful to taking quick, brief notes.
Updated timecalc.php to write to datadir() and added default_timezone

Vimrc improvements
- updated CursorLine background color for better contrast
- Added c_loop to vimrc_wordpress
- Added vimrc for editing bash files - .vimrc_bash