Cleans up configuration system; Streams down dependencies

This MR solves the following issues:

• Cleans-up the configuration system so that it is both simpler and stores also the value of prefix
• Removes dependencies on colorlog (never useful anyway)

added 5 commits

• 4dd99a58 - support both normal tc drawing & layout drawing, beat.editor#22 (closed)
• ad0efc26 - rm user-facing tc layout flag & add test
• d167e6e7 - Merge branch 'editor-tc-layout' into '1.4.x'
• 4eb87491 - Closes #24 (closed)
• 214eb54b - Remove useless bob.extension dep

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changed the description

changed target branch from master to 1.4.x

added 1 commit

• 5d39ed58 - Fix defaults display; Python syntax; Docs

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enabled an automatic merge when the pipeline for 5d39ed58 succeeds

added 2 commits

• 57640ea4 - Fix documentation
• 22e2c150 - Python 2.7 compatibility

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enabled an automatic merge when the pipeline for 22e2c150 succeeds

merged

mentioned in commit bbe34027