Release 2.49z1

Release from the recent master branch with some PRs merged.

Merged PRs:

• Allow merging with tags: gitextensions#2970
• Syntax highlighting for commit/rebase editor: gitextensions#2994
• Fix bug where unable to restore the window if minimized: gitextensions#2862
• Fix search for large number in commit messages: gitextensions#2864
• Fix automatically configured path to linux tools for Git 2: gitextensions#2952