…mTagProposal is created. This is most likely a temporary implementation.

…happen when adding or deleting AlgorithmTagProposals.

…al, correct increase function to only increase amount of AggregatedTag if a new AlgorithmTagProposal is created, not when modified.

…ifficultyTag classes and test_tag_proposals.py file, testing AlgorithmTagProposal and DifficultyTagProposal classes.

…eck AggregatedAlgorithmTagProposal.

…ew in TestTagProposals class. Fix mistaken 'assertEquals' to 'assertEqual'.

…odels.

…st_users fixture.

… tag proposals for given aggregated model.

…from aggregated tag models.