vimrc: remove scrolloff setting.
vimrc: merge LaTeX settings.
Revert "vromerc: remove Gmail from blacklist."

This reverts commit 9bec8426db20c2cbb8d0e2cec9f0c5d4ebca733a.
gitignore: ignore sqlite3 databases.
GIT: add Git docs.
git-delete-last-commit: remove.
i3status: add abbreviated weekday to time format.