adds has_children flag inside projects level_list
bump select2 version
Select2: sets disabled elements' background to transparent
adopt current select2 masters css class filtering options for top menus project search
Merge pull request #38 from opf/feature/has_children_flag_for_project_api

Add children flags to project level list
Fixes migrations for MySQL5.

This removes the default value on the summary text column. Excerpt from
MySQL 5.0 Reference Manual, 11.1.6.3. The BLOB and TEXT Types: BLOB and
TEXT columns cannot have DEFAULT values [1].

This seems to cause problems on windows boxes since 2008 [2].

[1] http://dev.mysql.com/doc/refman/5.0/en/blob.html
[2] http://stackoverflow.com/a/4553664/1474757
Merge pull request #43 from opf/fix/mysql5

Fixes migrations for MySQL5.