Merge pull request #32 from AMDmi3/ru-logo

Add logo-flags for Russia, Belarus, Ukraine and Estonia
Merge pull request #31 from AMDmi3/patch-2

Fix sed call to be compatible with non-GNU sed
Remove part of the Merkaartor code. This was never used and the Merkaartor editor is no longer maintained.
Make minimum number of tags/relations of some type needed for some statistics configurable.
Remove old jquery-ui version
Add missing HTML escape in search results. Closes #29.
Add flag for Latvia