Moved DB backing annotations to the temporary storage location, tables
are now property cleaned up on exit (database file remains)
Merge pull request #111 from lev-kuznetsov/master

Moved DB backing annotations to the temporary storage location, tables
Merge pull request #1 from dfci-cccb/master

Fetching
Null check on row
Merge pull request #112 from lev-kuznetsov/master

Null check
Added frontend for annotation buttons
Merge remote-tracking branch 'origin/master' into fix-issue-107
Cleaned up buttons. fixes #107
Fixed Heatmap overlay
Merge pull request #113 from jfarid27/fix-issue-107

Fix issue 107