Add validation message for 'valid_date'.
moved Redis aliasing to the end of Fuel's init
Merge pull request #1558 from koyhoge/1.8/develop

Add validation message for 'valid_date'.
typo fix
Merge pull request #1560 from huglester/patch-1

typo fix
Merge pull request #1555 from taha/1.8/develop

Redis multiple databases per connection support
make use of existing $dbname parameter in Profiler::start() to fix EXPLAIN attempts in PhpQuickProfiler
typo
Merge pull request #1566 from huglester/patch-2

typo
fixed call_fuel_func_array() not accepting an assoc array argument; closes #1562
Merge pull request #1565 from SlKelevro/fix-profiler-explain

fixed EXPLAIN attempts in PhpQuickProfiler
fixed broken unit test due to changed line number in base.php. related #1562
fixed $_GET not being cleaned after it is replaced in Input::uri()
create_hex_color returns rgba as definition says

The function returns alpha value as the definition says
The returned value is between 0 and 100, which is used in the Image class as alpha value.
Merge pull request #1570 from sagikazarmark/patch-2

create_hex_color returns rgba as definition says
Merge pull request #1568 from SlKelevro/clean-get-after-replace

fixed $_GET not being cleaned after it is replaced in Input::uri()
Bugfix on convert_number (impacts at least _resize and _crop_resize)

Depending on php configuration, float are sometimes converted to strings using commas instead of points. This notation can create issues since the conversion from string to float will return an integer.
For instance: "1.2" / 10 == 0.12 but "1,2" / 10 == 0.1...
Merge pull request #1571 from sdrdis/patch-2

Bugfix on convert_number (impacts at least _resize and _crop_resize)
Fix: Class variable has 2 distinct names

Declare with name $size_cache
Used one time with this name for debug
All others times, used with name $sizes_cache
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