[pkg] Drop non-existant files from MANIFEST.in

[pkg] Version 3.26.1

[test] Drop an unused function in cwconfig tests

[cwconfig] Always use "sys.prefix" to determine installation prefix We drop all legacy logic implemented in _find_prefix() which now happens to be buggy since we cleaned up setup.py in 3.26 (noticeably because virtualenv is no longer properly detected). Closes #17132990.

[cwconfig] Look for migration scripts directory relatively to code Thus getting rid of the last piece of data in "shared" directory. As a consequence, we can drop data_files from __pkginfo__.py. Related to #17132990.

[pkg] Get rid of "pydir" in __pkginfo__.py Nothing uses this.

[pkg] Get rid of "shared" data These are not used anymore per previous changesets. Related to #17132990.

[cwconfig] Drop shared_dir method There's no more users of this method. Related to #17132990.

[config] Avoid relying on shared_dir method when possible From 3.26, some "data" directories (like web/data and i18n or wdoc) are installed along with CubicWeb in site packages. So we can retrieve them relatively to the module that needs them (namely "cubicweb" for "i18n" and "cubicweb.web" for "web/data" and "wdoc"). Reason for doing this is that "share_dir()" is not working when cubicweb is installed in "develop" mode and we are about to drop this method. Related to #17132990.

[test] Add a test for WebConfiguration.locate_all_files() We are going to change the implementation, make sure there's no regression.

[cwconfig] Get rid of _forced_mode global And compute CubicWebNoAppConfiguration.mode within the class namespace. Related to #17132990.

[cwconfig] Get rid of CWDEV This is in preparation of a fix for #17132990 to cleanup legacy (and probably no longer working) behaviors.

[doc] Set release date of 3.26

[web] Fix UnboundLocalError about "exc" in ajax controller Introduced in 159dce89a145.

Link to "3.26" docs in README

Added tag 3.26.0, debian/3.26.0-1, centos/3.26.0-1 for changeset 199851fcddd4

[pkg] Version 3.26.0

[pkg] Version 3.26.0rc0

[schema] Define a decorator to handle methods override There is a number of external classes (from yams/rql) methods overridden "by hand" in cubicweb/schema.py. Define a single decorator to factor out the pattern. It handles specifying the method name (to avoid conflict with the local namespace) and passing the original method to the new definition when needed.

[pkg] Use setuptools.find_packages() We drop the custom get_packages() function in setup.py that used to look for test files (not discovered automatically since test directories are not packages) and replace it by explicit entries in MANIFEST.in.

[pkg] Drop SandboxViolation verification cracking Dunno what this is for. Let's see if this work without.

[pkg] Drop custom "install_data" command Not sure what this is for, the comment mentions "egg" directory, but this is quite likely an old hack that should be unnecessary when using a recent setuptools.

[pkg] Replace custom "scripts" handling by a setuptools entry points http://setuptools.readthedocs.io/en/latest/setuptools.html#automatic-script-creation

Set a default value for arguments of cubicweb.cwctl:run() This will help making a console script entry point from this to get rid of the custom installation of scripts in setup.py. Accordingly, update all calls of this function.