Support for custom mapleaders. Improved templates.

- Added 'Matlab_SetMapLeader' and 'Matlab_ResetMapLeader'.
- Fixed setting and resetting of maplocalleader in filetype plug-ins.
- Improved the template library.
- Updated and corrected the documentation.
- Switched to template core 0.9.3.
- Minor bugfixes and improvements.

taken from WolfgangMehner/vim-plugins, revision
https://github.com/WolfgangMehner/vim-plugins/commit/06f4c4cff4c5dd1e74c70c58b1fd2ff2d9b0e8b5