In the template manager one can select one folder / category by key board.
However, it's impossible to select "All templates" from that situation by key board.
A bit of clean up.
On Windows 7 sp1, 64-bit with
Build ID: 081a0854635f4bc9f6f743ef4e2675c208405f74
TinderBox: Win-x86@39, Branch:master, Time: 2014-05-06_23:32:18
Resolved fixed by Kendy on master with conversion to .UI navigation with commit: http://cgit.freedesktop.org/libreoffice/core/commit/?id=b29c078c7f193dd7dae74baf89fe1abb9264239c
The <Shift>+cursor(R,L) keys allow selection of multiple template items. Which can then be moved, exported or deleted. <ESC> will abort out of the template manager.