move rotten tilesources to extras
app++
libs++
LwHttp: handle 'Connection: close' header
add heightOffset for Line- and MeshLayer
double tap scale is back
get JTS geometry from OSMElements
unset MeshLayer heightOffset at start
use pre-package jnis for gradle...
fix ext-libs
Updates build.gradle for maven compatibility.

* Explicitly set support library version 19.0.1.
* Include slf4j-android dependency from maven central instead of local jar.
* Adds local.properties to .gitignore