Include abstract before summary (TekFak)

This MR aims to resolve issue #59. In short, the code includes the following changes:

• Auto-indentation of liuthesis.cls using latexindent with default settings to improve readability.
• \abstractpages is split into \abstractpage and \summary.
• Swedish summary is added immediately after abstract for lith thesis (rather than before).
• Swedish summary is now included in TOC.

I realize that the auto-indentation creates a large diff, but I had a real hard time reading it as it was. Let me know if I should revert the indentation changes and only include the new code.