.coafile: Update .coafile to new format

Closes coala#148

.coafile

@@ -1,25 +1,25 @@
-[Default]
+[all]
 files = *.py, coalahtml/**/*.py, tests/*.py
 
-[js]
+[all.js]
 files = coalahtml/_coalahtml/app/**/*.js, tests/specs/**/*.js
 bears = LineLengthBear, SpaceConsistencyBear, JSHintBear
 jshint_config = ./.jshintrc
 use_spaces = true
 max_line_length = 90
 
-[css]
+[all.css]
 files = coalahtml/_coalahtml/app/styles/*.css
 bears = LineLengthBear, SpaceConsistencyBear
 use_spaces = true
 
-[html]
+[all.html]
 files = coalahtml/_coalahtml/index.html, coalahtml/_coalahtml/app/views/*.html
 bears = LineLengthBear, SpaceConsistencyBear
 use_spaces = true
 max_line_length = 100
 
-[python]
+[all.python]
 # Patches may conflict with autopep8 so putting them in own section so they
 # will be executed sequentially; also we need the LineLengthBear to double
 # check the line length because PEP8Bear sometimes isn't able to correct the
@@ -28,20 +28,20 @@ bears = PyUnusedCodeBear
 default_actions =
     PyUnusedCodeBear: ApplyPatchAction
 
-[commit]
+[all.commit]
 bears = GitCommitBear
 shortlog_trailing_period = false
 shortlog_regex = ([^:]*|[^:]+: [A-Z].*)
 
-[autopep8]
+[all.autopep8]
 bears = PEP8Bear
 default_actions = PEP8Bear: ApplyPatchAction
 
-[json]
+[all.json]
 bears = JSONFormatBear
 files = data/*.json
 default_actions = JSONFormatBear: ApplyPatchAction
 
-[yaml]
+[all.yaml]
 bears = YAMLLintBear
 files = *.yml