Adapted rollup configurations to new signature., ironed out some minor
inconsistencies between configurations and some syntax cleanup. Fixes
following warnings when running rollup:
(!) Some options have been renamed
https://gist.github.com/Rich-Harris/d472c50732dab03efeb37472b08a3f32
options.entry is now options.input
options.sourceMap is now options.sourcemap
options.dest is now options.output.file
options.format is now options.output.format
Fix#5373.
- Remove references to removed file "../../build/deps.js"
- Update leaflet-include.js to point to "../dist/leaflet-src.js"
- Update watch to use the same destination file as rollup (dist/leaflet-src.js)
- Define getRandomLatLng where used
