Merge pull request #15 from kiswa/master

Merge master into dev
Merge pull request #17 from kiswa/master

Merge master into dev
Catch PDOException & Exceptions in cases like connection to DB failed or DB dir not writeable and return 503 status
Modified the message and userRoutes.php
Merge pull request #19 from amalfra/dev

Connection to database failed. Ensure api is writable.
Reset file modes from recent PR.
Add exception handler for entire API.
Modify marked to make links open in new tab. Fixes #18.
Automatic actions allow 'Uncategorized' and 'Unassigned'. Resolves #5.
Rename lane to column throughout UI (not in code yet). Resolves #4. Docs need updating.
Merge pull request #20 from kiswa/dev

Dev