Georeferencer: a fix to support non-ASCII path
- test that fails because of issue7244 (split several polygons of a
  multipolygon at the same time
- fix issue 7244
Fix #8275
Fix finding QScintilla2 lib: prefer local installs over system
SVG icons for project, add layers and help  actions
Merge pull request #700 from 3nids/svgaddlayers

SVG icons for project and layer actions
Merge pull request #718 from ddanielvaz/fix-8275

cleanup temporary database after write check (fixes #8275)
Make composer manager icon more visually consistent with handles of zoom tools and less dominant on toolbar.
Updated help icon for better theme consistency
Use more consistent font for help icon
Russian translation update.
oracle provider: fix log message
put cursor on top of identify/action icons
Add "New SpatiaLiate Layer" icon and make it accessible from the toolbar
Merge pull request #721 from 3nids/iconmouseontop

put cursor on top of identify/action icons
Use positional for str.format(). Fix #8277
accord wrench to Tim's changes in composer
delete base file
Merge pull request #722 from 3nids/iconmouseontop

accord wrench to Tim's changes in composer