Updated tile indices calculation and added new coverage calculation script
Use /tmp instead of script directory as temp path
Added trailing slashes to rsync paths and removed -t option
Pre-calculated tile sets, split full and partial municipality tiles, ambiguous municipality names etc.
Use mtime (modified time) instead of ctime (inode change time) for timestamp comparison
Calculate full an partial tile indices and insert them as an integer array to the boundaries table
Added new update-coverage.py script for an incremental coverage update