Release 2.6.0 (formerly 2.5.2)

[edjubuh]

Doesn't follow our release branch system yet, but the new features are:

• Fixed a bug when finding COM ports
• Project folders no longer have to be empty when creating a new project\
• Template files correctly no longer know anything about their depot

These changesets have already been merged into master and should, in theory, just need a verification double check.

[edjubuh]

ok to test

[edjubuh]

run build