implement bot update
add stylesheet
make bot instroduction alert to hide when an error exists
Merge pull request #345 from pkakelas/implement_bot_update

Implement bot update
Fix wrong view filenames in controllers/dbconfig.php
Merge pull request #350 from bugos/fix_view_names

Fix wrong view filenames in controllers/dbconfig.php
Merge from master and resolve conflicts related to boturl link update