open source added in index and about
added open source to index.php and about.php
Update index.php

switched text for blocks in index.php (landing page)
changed box text in index.php
small editorial edits
replaced semicolon
small editorial changes in index.php
small changes
added FB Geodäsie Bochum as partner in about
added Geodesy Bochum as partner in about
corrected typo
fixed small typos
Merge pull request #217 from enviroCar/dev

merged #217