Adds method to collect the day assignments of a resource in a scenario between two dates.

FEA: ItEr77S10ResourceAllocationLoadInformation
Adds calculator to obtain the ratios of a resource as a spring bean

Two load ratios are defined:

   * Overload = overload / (load + overload)
   * Availability = min (0,(1 - load/capacity))

FEA: ItEr77S10ResourceAllocationLoadInformation
Web interface to add the resource load ratios at the advanced search in the allocation pop-up.

FEA: ItEr77S10ResourceAllocationLoadInformation
Initialize the start filtering date with the task start date and the end filtering date with the task end date.

It has been improved the performance so that the search of the resources and their
load ratios calculation is done from this moment on when the advanced search tab is made visible. This is
the moment when the task start date and task end date are available (not
sooner).

FEA: ItEr77S10ResourceAllocationLoadInformation
Add the suitable casting on getting items of the list of resources with their load ratios.

FEA: ItEr77S10ResourceAllocationLoadInformation
Recalculates the load ratios on changing the filtering dates and incorporates interface validations in the filtering dates dateboxes

FEA: ItEr77S10ResourceAllocationLoadInformation
Adds margins additional to task limits(start, end) for default load ratios calculation in resource allocation advance search.

Two margins have been added:

   * A margin before the task start date.
   * A margin after the task end date.

The time used in these two margins has been the same and is equal to 30 days.

FEA: ItEr77S10ResourceAllocationLoadInformation
Adds graphic representation of the avaliability as a color progress bar and a icon for warning non-zero overload.

FEA: ItEr77S10ResourceAllocationLoadInformation
Sort the list of resources and triggers the sort after refreshing it.

FEA: ItEr77S10ResourceAllocationLoadInformation