lastInsertId support for PostgreSQL
Observer::notify('user_after_XXX') change

All three notifiers shouldn't use $user->name as passed variable, 
since $user->name cannot uniquely identify user. ($user->username does)

More meaningful variable passed to observer would be $user->id - which 
can uniquely identify user's record in DB.

Added second parameter $user->id and leaved $user->name for backwards compatibility.
Merge pull request #490 from marekmurawski/patch-1

Observer::notify('user_after_XXX') change
Fixing preview status with archive plugin.

Fixes #391
Updating for 0.7.6 release.

I'm removing the changelog.txt file since its a pain to keep up-to-date and probably no-one reads it anyway.
Deleting old icons
Added Burmese Myanmar as usable language for Wolf CMS translations
Adding new icons
Modified some plugin views to make use of new standardized icons in core
Minor update to PHPDoc comments in Framework
Adding last missing new default icons
Slug validation bug

Slug validation bug - slug wasn't actually checked due to if statement parentheses/logic error. 

CSRF upon errors

If user entered invalid value which generated Flash error, the CSRF token used for regenerated View was set with invalid path so user additionally got "Invalid CSRF token found" message.

This forced user to load clean (non-POST) version of page and start all edits again.

Fixed CSRF for View to reflect the same path as POSTing page (page/edit/# or page/add)
slugcheck correction by @mvdkleijn
installation frontend javascript bugfix
Merge pull request #491 from marekmurawski/page-edit-fixes

Slug validation/csrf error in edit page
Fix SQLite issue with children() and childrenCount()

Fixes #45, however, will need additional work on unit testing
Merge pull request #492 from marekmurawski/install-javascript

installation frontend javascript bugfix - win/xampp
Fixing bug in 076 release
Updating version number for 0.7.7 and updating docs
Fixing issue with link() not generating a suffix.