[1.3.x] updated core.css - added some z-w widths

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes minor
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | -
| Fixed tickets | -
| Refs tickets  | -
| License       | MIT
| Doc PR        | -

Added some extra widths in the core.css. 100% was missing as z-w100 specification to keep it consistent and 68/32 as golden rule was missing. That is being used quite a bit in Content as width division.
Merge pull request #1899 from espaan/patch-9

[1.3.x] updated core.css - added some z-w widths
Fixed typo.
added safetext modifier
added safetext modifier
Update changelog
added missing changelog entries
Removed invisible ASCII 1 character.
prepare changelog for 1.3.9
raised version number to 1.3.9
[1.3.x] Users account.php updated to avoid E_WARNING

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | -
| Fixed tickets | -
| Refs tickets  | -
| License       | MIT
| Doc PR        | -

Going to the Users panel (http://localhost:8888/zk138/Users) in the current Zikula 1.3.x gives the following E_WARNING on PHP 5.4.10. 

WARN (4): E_WARNING: Invalid argument supplied for foreach() in /Volumes/DATA_ES/MAMP_htdocs/zk138/system/Users/lib/Users/Api/Account.php line 59

I've adapted that line to make sure an extra check is done on the existence of an array variable. That removes the E_WARNING. Also the method call to Blocks api getAll was with a capital, where the method in Blocks is not.
Merge pull request #1920 from espaan/patch-10

[1.3.x] Users account.php updated to avoid E_WARNING
[1.3.x] Updated DBUtil for OrderBy and table prefix

ZWebstore uses this function and ordering of products is not working without this small update. It's an extra check for table prefix in the column checking. Not checked in 1.4.x. yet.

I have checked with other modules using DBUtil as well (e.g. Content), and there no problems arise due to this small change.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | -
| Fixed tickets | -
| Refs tickets  | -
| License       | MIT
| Doc PR        | -
Update CONTRIBUTING.md

use 1.4. contributing template and add note about companion 1.4 PR
Merge pull request #1924 from espaan/patch-12

[1.3.x] Updated DBUtil for OrderBy and table prefix
Force absoulte cwd path, refs #1689
Merge pull request #1927 from cmfcmf/absolute-path

Force absolute cwd path, refs #1689
added safetext modifier
added safetext modifier
Updated changelog for 1.3.9 release