New customization option org-dotemacs-default-file

Altered items:
org-dotemacs-default-file, org-dotemacs-load-file
Move org-dotemacs-load-file to end of file
New command org-dotemacs-load-default

Convenience command that doesn't prompt for any filenames.

Altered items:
org-dotemacs-load-default
Alter org-dotemacs-load-default

Set default value of match arg to "" (which matches all tags)

Altered items:
org-dotemacs-load-default
Bugfix: org-dotemacs-load-default

Add arguments to call to org-dotemacs-load-file

Altered items:
org-dotemacs-load-default