src/actionItems: loop through all folders for meetings

With the latest change, we had to introduce a very fragile concept.
Where we looked 7 days prior to capture the last weeks meeting.
Instead remove this, and iterate through each folder to capture the
last meeting. More work but should reduce fragileness.

Additonally action items were not being correctly matched. Update
regex for actionItems.

fixes: #50

Author: prestist