Fix multilined LaTeX within card templates

Fix issue 1935. The mungeQA method is passed a string that has been
stripped of newline characters in the "meat" of the card, but which can
still contain newlines in the templated part. Get mungeQA to handle this
properly; also, switch to case-insensitive matching for [latex] tags.
Merge pull request #166 from yshklarov/issue-1935-rc1

Fix multilined LaTeX within card templates
Remove redundant activities & a service

IntelliJ revealed some activities and a service in the manifest
which are do not exist.  Additionally, SharedDeckerPicker is no
longer used anywhere.  Both of these are therefore worth removing.

Actually remove SharedDeckerPicker as #hssm suggests
Merge pull request #163 from donald-w/v2.1-dev-RedundantActivities2

Remove redundant activities & a service.