Added the original ILLC dissertation style (used with permission).
Added draft variant of the BTH Dissertation Style with copyright attributed, with permission, to Eric Nilsson and Mattias Liljeson. The original ILLC fork has been mofified to accomodate margin- and institution logo commands used in closed-source versions of the BTH latex thesis template. This should allow users to migrate to the BSD-licensed style without facing problems related to abstract page width or BTH logotype inclusion.

Renamed dissertation summary to Abstract, in order to match previous versions of BTH computer science dept. thesis templates.

Added BSD 3-Clause license.